This is one of the best videos ever. A topic often overlooked and the explanations are so concise. Using HF to clean kitchen bowls. What a riot.

I do a lot of auto work and find myself blowing through a ton of solvent to clean parts. I never would have considered using bleach before this video. I'm sure it would rust the snot out of most metals with any long duration of exposure, but I'll definitely give it a try with a good rinse afterwards.

@AppliedScience

8 жыл бұрын

+NightHawkInLight If the grease is really thick, the bleach (Comet or Ajax) may not work well until most of the gunk is already removed. However, definitely check out the use of hot ethylene glycol (a boiling pot of antifreeze) to de-grease parts without scrubbing. I haven't tried it, but it apparently works a charm: kzread.info/dash/bejne/lXeIs61yka7WopM.html

@Nighthawkinlight

8 жыл бұрын

+Applied Science Interesting, that's also a clever way to go.

@dalton6439

8 жыл бұрын

+NightHawkInLight I use kerosene or diesel fuel in a "Sure Shot sprayer", then brake clean and air.

@dougankrum3328

8 жыл бұрын

+NightHawkInLight Bleach...cheap a and easy to buy...but, I left a few tool-steel drill bits in some bleach for a couple hours....they were seriously eaten away....

@svenp6504

8 жыл бұрын

+Doug Ankrum Yeah bleach is not a good choice for steel. It's a strong oxidizer and after reaction leaves salt which isn't so good for steel either. It doesn't take much on really clean steel to cause insta-rusting.

Ben, I think the bowl scratch should have been its own video. It was hilarious to see you pull out a huge Ti rod and casually scrape your breakfast cereal bowl.

@AppliedScience

8 жыл бұрын

+oisiaa Yes, I was thinking of splitting this video, but then I feel like I am cheating the folks who have pledged on Patreon. I certainly appreciate the support, but in a weird way, it makes me feel like each video must meet a certain quality and length threshold. I know that most viewers enjoy the type of video that I was making prior to starting Patreon, so I should just keep doing that, but it's not so easy to internalize the thought.

@jcims

8 жыл бұрын

+Applied Science I just upped my pledge a buck to raise your stress level...neener neener.

@svampebob007

8 жыл бұрын

+Applied Science how about a side channel where you can upload short or previews/teaser videos?

@ConstantlyDamaged

8 жыл бұрын

+oisiaa Funny part about that? I have titanium sporks (yes, the best eating implement ever) and when I heard him say he was going to clean the 'lightning strikes' of titanium from the bottom of a bowl I got excited and started taking notes. I have about half a dozen bowls and plates with such marks. Then he broke out the hydrofluoric acid. Nope, nope nope nope. Time to buy new plates and bowls!

@chrisvolk4730

5 жыл бұрын

oisiaa Agreed! I laughed my ass off.

Man, Ive actually been wanting a video on exactly this topic for awhile, the fact that you made an entire video on cleaning solutions just reaffirms that this is my favorite youtube channel. Thank you for all of the fascinating content.

Some chemicals have an understated reputation in terms of safety, such that the substance poses risks that are not often discussed, and can be a latent hazard. Other chemicals are overstated.

@hulladek3

8 жыл бұрын

+Applied Science Hey what type of bleach are you using? Will Sodium hypochlorite transom oil chemically?

@phonescreamer

8 жыл бұрын

+Applied Science Not sure what kind of gloves you're using, but HF will weaken/possibly penetrate standard lab gloves like latex/vinyl/nitrile. Nasty stuff, be safe.

@fdutrey

8 жыл бұрын

+Applied Science Something tells me the Ultrasonic cleaner is next

@cheerdiver

8 жыл бұрын

+Applied Science From my understanding, the water in Isopropyl is there to help in killing germs. A water molecule is required for the chem reaction.

@asteen75

8 жыл бұрын

+Yandy True.. just because a glove holds back water doesn't mean that chemicals won't pass.

I would love to see next video about glues in similar fashion :)

@mangefox

8 жыл бұрын

+Piotr Drozdowski Excellent idea

@guytech7310

8 жыл бұрын

+Piotr Drozdowski See Dan Gelbart's channel, He has a video on adhesives.

@bouipozz

5 жыл бұрын

YES! Im currently battling with a stickly slimy residue from 10 year old double sided tape. Who would have thought such a weak adhesive would be so hard to remove!

@bouipozz

5 жыл бұрын

Update for anyone who cares: paraffin and a good scrub with a brush worked pretty well

@bouipozz

4 жыл бұрын

@@AEON. thanks for the advice. Im in uk so no walmarts round here but might be able to get it online. Interesting idea using more tape. Jobs done now but ill bear it in mind for next time!

Ok here is a few things that might interest you: First I believe isopropanol is usually sold as 70% solutions in drug stores because it's the most effective concentration for disinfecting stuff. It also doesn't dry up skin as much as higher concentrations. Secondly, the solution that is usually refered as piranha is a mixture of concentrated sulfuric acid and hydrogen peroxide (usually 30%). It is extremely effective at oxidizing organic matter. The effectiveness of your hydrofluoric acid solution might also come from it's ability to sligthly dissolve the surface of the bowl, thus dislodging any dirt. For other glassware cleaning solutions, you might want to check aqua regia and base bath. Also (O_O) that hydrofluoric acid bottle is scary! A few thing you might wanna know if you're brave enough to work with that stuff : HF is quite volatile, especially at high concentration. So you absolutely want to work under a fumehood or something. Gloves are also not an absolute protection. They might give you a false impression of safety. Lastly, you absolutely need to have some calcium gluconate gel in case of exposure. You can find alot of safety documentation about manipulating HF on the internet. Keep up the good work! (safely)

@hekkenfeldt

8 жыл бұрын

+supersmashsam It was so creepy to watch those short gloves and the shirt plus the way Ben handled the stuff with two hands in the air. Ben: please be aware that people copy you, so be a good example.

@dandevries7124

5 жыл бұрын

I was surprised the first time I saw Whink Rust Stain Remover on the shelf at Wal-Mart (also at Home Depot). It's in a brown plastic bottle. Label and cautions says it contains hydrofluoric acid! The SDS for it says it contains between 1.5 - 3.5% hydrofluoric acid. I carefully set it back on the shelf and decided I'd rather have the rust stains then buy that product.

Marks from metal on porcelain or ceramic come off nicely with oxalic acid as well (e.g. Barkeeper's Friend). I've never tried it with titanium, but it's quite effective with marks from aluminum, iron, copper, and chromium, which is all you're likely to encounter in a kitchen anyway. It might be a little slower than hydrofluoric acid, but it's quite a bit easier to come by.

@PowerScissor

Жыл бұрын

Toilet bowl cleaner works also. Old plumbing snakes (before composites were used) would leave metal behind on toilet bowl porcelain when snaking a toilet. Scrub all you want and they dont come off. Toilet bowl cleaner would take them right off with a single wipe.

thanks for the link to Dan Gelbart, I spent my day watching everything, I was blown from the introduction to the end!

Hi Ben, great video. My honours supervisor had to get his little finger amputated as he discovered a small burn after working with a bunch of acids, including HF, one day, and it was the only way to be sure that his bones would not dissolve out from under him in case it was the HF.

@dieSpinnt

Жыл бұрын

Oh! I've seen this movie, too. The story had a little problem with reality/science and was too much of a horror-movie stereotype, I guess. See "A review of hydrofluoric acid burn management - PMC", by National Institutes of Health (.gov). What you describe is not how acids and acid-burns work at all. I mean, losing a finger to amputation (which is the treating physician's decision and can save lives, as with burns) is bad enough and I feel sorry for your friend. But then why invent such impossible stories? That sounds like it's coming straight from a goat-herder in the Bible trying to imagine how a snake bite would function/its consequences. It was just ridiculous back then, and today such "dissolving bones" BS isn't better ...

@Chillingworth

Жыл бұрын

@@dieSpinntI mean they could just perform a test to detect if the acid was there lol

Instructions Clear Enough. Successfully choosed right cleaning solution. Thank you.

@984francis

4 жыл бұрын

Chose

This is one of the most usefull videos i have found on youtube. And it is something that anybody who tinkers in the garage can use. As a follow up video, i would like to hear more about surface prep for gluing and painting, and the differences between sanding, blasting, etching etc, or just leaving the surface degreased.

@AppliedScience

8 жыл бұрын

+claus christensen Thanks! I realized this was already a long video, but initially thought about covering sandblasting and other mechanical cleaning methods. Good topics for future videos.

@gyssedk

8 жыл бұрын

+Applied Science To long? I dont think any of your videos suffer from that problem :-) I have used lye to clean and degrease steel parts before bluing, and that seemed to work quite well. Is that viable, or did i just get lucky?

@mikeissweet

8 жыл бұрын

+Applied Science If you made a 3 hour video, I would watch it. Great stuff Ben, as usual!

@CraigOverend

8 жыл бұрын

+Applied Science With all that liquid squirting I kept hoping I'd see a laminar flow ultrasonic cleaner that transmits the ultrasonic vibrations the length of the laminar stream to the surface to be ultrasonically cleaned. A mechanical cleaning method video with something like this would be ace.

@Inspironator

8 жыл бұрын

+mikeissweet +Applied Science DITTO!! Very interesting, can't wait for the next video.

thanks for showing the water test. I will use that a lot.

@bangkokjordan5534

3 жыл бұрын

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Great video, Ben. Two points. Piranha Solution typically has sulfuric acid NOT hydrofluoric acid. I've never heard of Piranha solution being described as "a strong acid with hydrogen peroxide", but live and learn. Second point. I noticed the pipette you used to transfer the hydrofluoric acid. It was in your right hand as you pointed to a bottle label; the tip was being held over the edge of the table. If you were standing, your legs might have been at risk of hydrofluoric acid dripping out. Not the best safety practice. BTW, I hope you have some Calcium Gluconate gel/solution handy when working with this acid. topical application should be the second step, after you flood the area with water. ;)

This was very interesting... I would like to see more of the science of how common household cleaners work, why they work and how to best use them... Thanks

This style of video is extremely helpful and I would love more of them for adhesives, materials, gasses etc

That's how I know I've done a good job scrubbing the dishes, the water coats the entire plate/pan in a layer rather than beading up. I also work at car dealerships taking photographs of the new vehicles, it's always interesting to see perfect and new glass that's so clean the water creates a huge flat sheet on the surface. Typically you think of a "CLEAN" windshield as one that beads up with the likes of rain-x or aquapel, but really that's not the case.

I watched this video years ago, learned a few things, and clicked the like button. I watched it again today, having more knowledge of chemistry than I did years ago, and I understood your theoretical explanations much more completely. I wish I could click the like button a second time...

honestly, I'd love to see more cleaning videos. Chemical polishing metal, removing heavy water deposits and everything

@johnsonfsdwiwisdomfhfj6246

3 жыл бұрын

SSD Solution Universal Chemical & Machine to clean,Whatsapp: +8801756140888 We Clean We Purchase Black Notes Green White Any One Any

Yes please more on cleaning. Its a topic with not enough literature on it. and.. Dan Gelbart is awesome, but he made only those 18 videos in 2012 and stopped. I recently left him a massage to please continue the classes.

This video is one of the most helpful tutorials I have ever found. It made all the difference with some of our electro plating issues, as well as powder coating and painting issues.

Don't forget the great solvent: Eg, elbonium greasium.

@SimonCoates

5 жыл бұрын

Unfortunately millennials banned using it.

@tatiana-pl6rg

4 жыл бұрын

I M F A Oooooooooo

you sir should make a late night infomercial for your super secret cleaning solution. its like oxi-clean but better. it might melt your face off, but that was cool

@Rich-on6fe

8 жыл бұрын

Melt your face? dissolve your bones...

@whuzzzup

8 жыл бұрын

+Albion Laster Well HF can (will) also kill you if you get enough on your skin. Read the wiki article. This is one of the very few things where "don't try this at home" would actually be a reasonable advice.

@jeremiahmick6393

8 жыл бұрын

We hate it to do. It was great to hear that. It was great to hear that But, . It

@bouipozz

5 жыл бұрын

But wait... there's more!!

Kind of expected you to dish out the HF, still lost it. Love your channel so much.

+Dan Gelbart KZread channel is fantastic, thanks for the link Ben!

I have a commercial cleaning business, and this is very helpful.

I'd love to see a follow up on acidic and basic cleaners as well!

Ben, I was a Security Guard at an electronics assembly plant in Oregon. I also have an AA in EE. They had this really awesome cleaning tank. It was full of TriCloralFloralEthalane.(sp?) Similar to what you demonstrated with the vapor cleaning. This 3x3x2 box had a heater on the bottom of the stainless steel tank. Near the top opening were some aluminum tubing, three loops. These were cooling tubes. I figure the entire unit was a heat pump. Condenser on one side(bottom), Evaporator coil on the top. You could visually see the vapor boil up then be attracted by the cooling coils. Dripping liquid back into the tank. Keeping the vapor contained within the unit. To clean a PCB they would dip it into the vapor.

Probably not going to use this as I rarely have to clean things that are that tough, but I learned a lot of chemistry by watching this. Cheers.

The most stubborn stain I ever saw was lithium grease. I got it on a T-shirt working in a factory about seven years ago. It's been through the washing machine hundreds of times, and there are still these huge gray blotches on it. If I remember correctly, lithium grease is just a lithium soap, but I've yet to find a detergent that can touch it. Maybe the lithium's diffused into the fibers or something. Either way, I loved the video. It's not hollow praise when I say that I'm impressed how you can make a video about solvents captivating. Cheers!

Sweet! I agree the bowl scratch could have been it's own topic. And spinning of that : I would love more cleaning of metals and metal oxides. I've learned that oxalic acid can be used to clean iron oxide, without destroying underlying surface. For example, rusting nail on wood facade. Or small rust deposits on the car after driving around during a winter in Sweden. I've tried use this method to clean stainless heat exchanges from iron oxide deposits but mixed results. I would love a video about how to maintain your own house hydronic heating. Cleaning heating radiators from deposits (magnetite?). Make tap-water less reactive when doing work on your heating in household. How to clean aluminium heat exchanges (water - air). And copper oxide.. There is alot about metals :) Great work! Thanks!!

I saw a video just a few weeks back, where a company does outdoor car/boat cleaning, using pulverised dry ice & compressed air, which did an amazing job on a rusted car body - ready for undercoat... "Cold Jet" on the National Geographic channel.

This is just about the most informative video I may have watched in the last 2 years. Thanks!

I love this video! I had to download it. Cleaning glassware correctly is extremely important and it’s all thanks to this video that I’ve managed to meet a high standard level of cleaning.

Wow, I learned more about cleaning in your 22 minutes than I have picked up in my entire life.

One of the more useful experiments that I did in high school chemistry actually did not involve a chemical reaction. It was all about cleaning the glassware. We started with a KMnO4 solution that we used to sully the inside of two test tubes. The next step was to clean them. #1 tube was cleaned with 50 ml of water. It was given two 25 ml baths. #2 test tube was cleaned with only 30 ml of water. It was given three 10 ml baths. Which technique was more effective, and why? (It turned out that technique #2 worked better.) (Using potassium permanginate was all sciency and geeky, but I'm sure that food coloring will work as well.)

"Let's make this simple cleaning solution by mixing water, peroxide, and hydroflouric acid" reminded me of "Thinking quickly, he created a homemade loudpeaker out of a squirrel, some string, and a loudspeaker" I was like "Yeah, let's just throw some fucking hydrofouric acid in there, that'll clean it up real good"

@whuzzzup

8 жыл бұрын

+Khandnalie Yeah I was like "water" - ok got that, "H2O2" - ok can get that, "HF" - WTF??

@johncochran8497

8 жыл бұрын

+whuzzzup Yup, I was more like, "water" ok. "H2O2" ok. "Don't use the weak stuff" Wrong, can use it, just more of it and less water. "HF" - You have got to be kidding.

Excellent video. I am a little surprised that you did not go over the cleaning power of concentrated nitric or sulfuric acid.

Really solid informative video. You need more real world dirty stuff ! surfactants, chelating, media blasting, electrolysis. There's so many ways to clean stuff. Also I think building some closed loop cleaning apparatus would be popular, maybe a spray wash cabinet that re-filters (distill even ?) it's cleaners, we love watching you build stuff !

Out here we have very hard water, and it deposits on all surfaces. A simple mix of Sulfuric acid and water removes the minerals. If some particles remain they are much easier to wipe away after treatment. Most laboratory's use this formula to clean their equipment, and it's effective for grease as well as minerals. I also use this as paint prep for steel, most of my chains have been painted to keep them clean, and a soak in diluted sulfuric and water eats rust away in short order.

I love learning about science in practical, real-world uses; especially since all the different cleaning chemicals and products confused me! Thanks!

Well I think it may be true that the acetone dilutes the greases and when drying they are deposited back in microlayer, but many paints have some solvents inside as well, therefore they dilute the remaining microlayer, bond and the greases are deposited evenly through the paint layer when drying, which we don't mind. It would be interesting to actually make the flake test of the bleach-cleaned and acetone cleaned painted part.

Hey Ben! Thanks for yet an other great video. Piranah solution is usually made with sulfuric acid and hydrogen peroxide, but I guess hydrochlroic will do the job aswell. It really is super nasty stuff though, and you should always make sure the part is very clean first. I would also like to give a shoutout to ultrasonic baths for cleaning, they can really work wonders. A great method for cleaning metal with burned in stuff from ion-sources etc. is using a abrasive like titania or alumina with alcohol or water :)

This is a great video, but there is so much more which I don't fully understand, for example surfactants and saponification. I always felt the branded cleaning products have taken away much of our understanding of cleaning.

_Here, let me just demonstrate how hard it is to clean this by marking it with titanium_ Ok, so you just have a titanium rod lying around? Ok then.

@StefanGotteswinter

8 жыл бұрын

+LazerLord10 Dont you?

@LazerLord10

8 жыл бұрын

Stefan Gotteswinter Unfortunately not.

@JerryBiehler

8 жыл бұрын

+Stefan Gotteswinter I do...

@fpm1979

8 жыл бұрын

+LazerLord10 Not to mention the concentrated hydrofluoric acid. Effective but not exactly a household chemical.

@inademv

8 жыл бұрын

+LazerLord10 do you not?

That solvent-vapor-cleaning method is very nifty and elegant. I keep waiting for an opportunity to use it, but so far, I haven't had one.

"To clean off metal marks, use these common chemicals, and also a dab of lab-grade highly toxic HydroFluoric acid and that shit'll come right off!"

@GreenOrgyKing

4 жыл бұрын

What happened to good ol' Lye infused foaming petroleum spray? Aka Oven cleaner? yummmmmy

There's another commonly available cleaner called Barkeepers Friend which contains abrasives, surfactant, and oxalic acid. I have found that it can often remove marks that Comet cannot, though I don't happen to have any titanium forks to try that.

One Interesting method of cleaning is with an ultrasonic cleaner. This might make a interesting video if you make this a two part series on cleaning. For painting prep, Hardware stores sell "Prep and Etch" which contains phosphoric acid, which leaves clean surface suitable for paint to bond to for metals. The Solvent vapor method was very interesting! Another possible video is metal corrosion protection: plating (Zinc, Nickel), anodizing (aluminium), passivating (stainless), black oxide (steel), molten nitrate salt, paint, and powder coating. As well as sacraficial anodes, and cathodic protection.

Those Dan Gelbart videos are great. Thanks for the cleaning tips.

one of the first things we learned in lab was that when you clean benches to disinfect them you cant use pure ethanol, you have to add water so the solution can actually get into the 'bug's cell membrane and then it will kill them, pure ethanol wont penetrate their cell walls. That always amazed me as you'd think pure ethanol would kill anything lol. Anyway, great video again mate.

Cool video man! I love that you explain stuff in a simple but in-depth way so that people like me can grasp much more easily. I have a suggestion for a video: Dissolving certain elements with acids and explain whats going on.

I have used sulfamic acid to clean steel marks off of porcelain tile. Usually from a plumber dragging his torch tanks across a floor.

Could do an episode on surfactants? Most pharma cleaning relies on a series of different surfactants layered in a cleaning process to fully clean vessels and piping and then a process to clean the surfactants since surfactants are reactive and are just another source of contamination. The use of surfactants of different pHs reduces the dependency on solvents so handling at scale is safer and more environmentally friendly. I thought of this when you introduced Acetone something that is both polar and non-polar which also describes soap.

We use the C02 cleaner at work, to blast bits of metal out of the things that we laser cut. It cleans and is slightly abrasive so that it can get the slugs out of the cuts.

Please please please make a follow up video Including of the possibilities to prevent flash rust on prepped metal parts. I do a lot of restoration work and the “comet” cleaning method has worked well for me. I pressure wash afterwords with a high heat high pressure machine. But sometimes I struggle with flash rust. Even with high pressurized air drying… Under heated conditions… No matter how fast I dry parts some of them just seem to hold a bit of moisture which can cause flash rust. Sometimes I even use a clean burning torch to quickly boil out the moisture from some of the more texturize rust pits.....even If not visible, I’m afraid it hurts paint adhesion. Would also love your input (or complete video😁) dedicated to paint prep and painting with only available materials from local hardware/automotive stores. It’s becoming easier to get professional quality, very tough, and wear resistant coatings with careful paint prep and locally store-bought materials. It’s not easy, and requires a few weird tricks… Like heating the part before painting, and cooking afterwards.... Kind of like tempering or normalizing steel suppose. Don’t get me wrong… I love my spray booth, fancy guns, and high dollar chemicals and coatings… But sometimes it’s fun to see what results can be had from careful preparation and easily available store bought materials. also I hope my experimentations and knowledge can help other folks… Who have a project in mind but don’t have $10,000 for a professional spraying set up. I have referred back to this video so many times over the past three years. I’ve spent the better part of 20 years doing restoration work. Small things like hand planes,up to giant metal lathes and mills. Everything from media blasting, powder coating, eanodizing all types of paint, surface prep, and other shenanigans. I always spend 90% of my time on part prep cleanliness… Helps make up for my llacking paints skillsLOL. I have been lucky to acquire all forms of equipment, and have tried everything from large scale ultrasonic cleaning, all types of electrolysis, wet/dry tumbling, steam cleaning using solvents,, allkinds of weird things. Even did wild experiments submerging parts in vacuum chamber in some form of solvent or cleaning solution. Pull a vacuum for a long time and it seems to almost boil off all contaminants… While penetrating any rust or porous material with cleaning solution. II imagine when the foreign substances are penetrated… It weakens them greatly and breaks their adhesion to the part. Follow that process with a thorough pressure washing… And it has proved fairly useful. Obviously just an experimental process. But interesting. Thanks so much for your time and commitment to your channel and the KZread community. Even with years of experience, failure, and lessons learned Your videos are a wealth of knowledge and new viewpoints. Your time and effort is greatly appreciated by Folks like me.

depending on the construction of that bowl, there is possibly a glaze on top of it, which to my understanding is essentially just a glass, which would happen to still be harder than most metals

And here I always thought the stronger it smelled the better it cleaned.Great info!

@AppliedScience

8 жыл бұрын

+Nick Moore That's usually true -- especially for adhesives and paints as well as cleaners!

From all youtube videos you are 100% spot on in what you do and say thank you very much

I know I'm a bit late to the party, but this is an excellent video. One of your best IMHO. The science of cleaning is fascinating. You should do one about soaps and their mechanism too.

This is the best cleaning chemicals video I have ever seen. :)

as someone who is getting into airbrushing/automotive painting this was some great info thanks!

my old company makes dry ice blasterers. it uses what they call high density dry ice. it's approximately 3.3 mm in diameter. and shoots out about 200 psi. similar to sand blasting. but the neat thing is. the media sublimates and all that is left is the stuff removed.

A most informative video, thank you for making these.

Ben, in the last part with the "Piranha" you said you can't use regular drug store peroxide (3%) but couldn't you use it if you just changed the ratio of plain water to peroxide? In your mix you have 1/12 18% peroxide, shouldn't that be the same as 6/12 3% peroxide?

@crgarciamg

8 жыл бұрын

+Nick Horvath That's exaclty what I was thinking: if you use 1 part of 18% H2O2 and 10 parts of water, you effectively have 11 parts of 1.8% H2O2!

@calebarchambault9706

7 жыл бұрын

the problem is that most 3% solutions sold in stores have stabilizers that diminish the effectiveness of the piranha solution

@treykilgoreiscool

7 жыл бұрын

caleb archambault you just need more piranha solution, Caro's acid should destroy any stabilizer

@tolkienfan1972

3 жыл бұрын

But what amount of HF would you then add??

Great video as always. I can't help but think of 1950's household cleaning commercials... Try B&W with some old TV artifacts...

Super excited to see a video from you. I've seen every one and have been checking back every couple days. Great video!

This is so helpful!! What I'd like to see is what would be the best cleaner for electronics, for when you need absolute clean, like when measuring pico & femto amps...

Comet cleanser is good but I like a similar product called Bartenders Friend. I use it on the mirror of my 60" carbon arc searchlight which is coated with rhodium. I love your channel. Always interesting and informative .

Stuff like this should be taught in every intro chemistry class.

This is probably the most convincing Comet advertisement I've ever seen :D

I've watched this three times over the past two years. At least. Thanks!

Hey ben, it was not liquid CO2 blasting a surface, but a high pressure air stream feeding very small chips of CO2 that instantly evaporate when they hit the surface, blasting the dirt off but not dealing damage.

The last one is interesting to me because I've used hydrogen peroxide and hydochloric acid to etch copper before; that's very similar.

Ha! I knew you got that soap trick from Dan Gelbart. That guy is amazing. His lathe is epic.

I had always assumed that the water in most conventional isopropyl alcohol was a matter of cost or safety. The whole video is very interesting, but that fact in particular stuck out with me. Most of the cleaners we use on a regular basis are water-based, but I never really appreciated the role of water itself in the effectiveness of those cleaners.

Why do I love this channel? Oh yeah I'm a nerd lol. But seriously I'm restoring a BOWIE hunting knife handle. I tried electronics contact cleaner, isopropyl alcohol ( high content) wax and grease remover. I used citric acid. Rinsed in distilled water then soak in soda bicarbonate. I want to electroplate the handle. I made all my solutions. I've done a few items and worked perfectly! But this knife handle? Oh man.

Very nice video.just learning chemistry.refreshed the polar/non polar with me.very useful video.

I love and learn so much for your videos.

@bangkokjordan5534

3 жыл бұрын

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Man I love your videos, there's a lot of good information and the way you present it is really nice! As much as I would love to see you put out videos more frequently, the quality of what you put out is really great!

@AppliedScience

8 жыл бұрын

+svampebob007 Thanks!

That was awesome. If you do more, I'd love to see your take on cleaning aluminum for welding.

Now how do you get rid of the hydrofluoric acid residue off the food bowl?

@TheHuesSciTech

8 жыл бұрын

+insanegammer109 Water? It's not even remotely dangerous _in trace amounts_ in any case.

@svenp6504

8 жыл бұрын

+insanegammer109 Eat some cheerios.

@homosapiensqp3225

5 жыл бұрын

HF is a gas, just heat the bowl

@skeggjoldgunnr3167

5 жыл бұрын

use your noodle that's in your cranium there. how *DO* you kill an acid? BAKING SODA! no?

@hasriosnmohajssad665

3 жыл бұрын

SSD Chemical Solution Activation Mercury Whatsapp: +8801756140888 Our offices at Bangladesh,Dubai,India,Pakistan Office World Wide SSD,Solution,Chemical,Activation Powder,Whatsapp: +559591216367

Your videos are so awesome and make the unusual so interesting.

Great job again.important subjects like this are not to common to find.burnt it to dvd....

Hi I just came to your Chantal front nighthawk in light and I am really impressed awesome video

Great video! It would be nice to show some smart ideas for day-to-day cleaning.

I got titanium marks on a bowl when I used my lightweight camping cutlery at home - now I know why I can't clean it off.

Man, I hear 2 - 3 new and interesting facts in every sentence. Your videos are amazing! It's like applied TEDtalks, lets call it TEDdo's

Great explanation on solvents for use on grease, dirt, etc.. I'd be interested in a scientific explanation of what's actually necessary for disinfecting bacteria/mold/fungi/soap-scum on various household surfaces like wood, lanoliem, poecalen, various carpet and cloth materials, plaster, glass, plastics and cookware, etc..

Dry CO2 cleaning guns do not dissolve actually. They are just like sandblasting, but not abrasive couse dry CO2 is very soft. Cooled contamination shrinks and decrease it's bond to the surface. And there is no liquid phase at all, dry particles of a few um size instantly turn into a gas when heated. Their volume then rapidly increases ~500 times, witch in turn helps to remove contamination. So basically it's a sum of 3 principles: high speed (up to 300m/s) kinetic blasting + rapid cooling/shrinking + rapid gas expansion Lot of companies make CO2 Ice blasters, including big ones like Kercher.

@MichelPASTOR

8 жыл бұрын

+MrDehicka Thanks for the infos. I think you made a typo it is Kärcher.

@MichelPASTOR

8 жыл бұрын

+MrDehicka Thanks for the infos. I think you made a typo it is Kärcher.

Only you could make a video about cleaning stuff so interesting.

this video was way more interesting than I expected!

I hope to see more videos on cleaning. I would love to learn about glass cleaner and brake cleaner.

This was an amazing video! I was really hoping you'd dive into some of the common cleaners we use for daily use. The comet along with adjoining explanation was mind blowing, because now I understand a bit about what it's doing, and when to use it! I was really hoping you'd touch on the windex and bleach that were sitting on the bench too. Maybe an accompanying video?

@AppliedScience

8 жыл бұрын

+ThePolysyllabist Thanks! Yes, the video was already getting much longer than my usual target, so a bunch of topics will have to wait until next time. I do like the idea of talking about the ingredients in common household cleaners.

I never knew cleaning stuff could be so interesting.

Awesome and useful video! You might want to not store that HF mixture in a glass container. It will eat through the container for the same reason it will eat through the TiO2. Also, the fluoride ion is extremely mobile when it is not in a buffered solution (passes right through a layer of photoresist like it is hardly there) so I would NOT use regular gloves that are not rated for acid resistance when wiping down things with piranha. I work in a cleanroom and just want to keep you safe so I can watch more of your videos! ;)

I spent some time looking for guidelines that indicate which plastics are attacked by different solvents. Some solvents which appear safe to used on plastic result in long term damage. I remember being a little too liberal with contact cleaner inside a BBC micro computer. While the plastic did not appear to suffer initial damage, after a few weeks the case became brittle and turned to powder. Tupperware suffers the same fate if it is cleaned with a weak sodium hypochlorite solution such as Milton.

This is a great video, learned what polar and non polar means now.

This answered a lot of questions I was curious and had intuitions about. Thanks

For removing last traces of grease off stuff you can use petroleum-ether, that is used for medical purposes. It evaporates very fast and does not leave residue. Only surface has to be cleaned with other solvents before, otherwise you just smear dirt/grease around...