Very well presented. Yes, finally someone who has read the manual correctly:)

You are the first video, I've seen, that did it correctly.

This journey was interesting an short but it was a good example ,I just recently bought me a pH pen an keep it in my back pack and take it with me every where

The best tutorial video for calibration, straightforward. Not like other videos, ang tagal mag explain. 👍

New subscriber from Phillipines

I had strict rules from college of not turning it on until I was in a group ,or traveling ,but this time I could open it an check it out and see what group i was in

Thank you for your informative information. Must remember to clean my meter after each reading with distilled water which I haven't been doing, but only with tap water which will effect what reading I get

This Video is very useful for me

Thank you for this video I just got mine now I understand how to use it

Very clear demonstration the best i have seen so far I will def use your method.

Thanks a lot simple and clearly explained great

Thank you so much

Great demonstration. Another video showed the testing water temperature should be 25 C (77f). Is water temperature not important? I was frustrated to match that number, but this is easy. Thank you.

It's supriseing that a little divice like this can change people lives ,I'm someone who like traveling an taking my children with me ,but not having what you bought an what the deviceean when you yourself paid for it especially at a time like this ,not having it destroy people crops an people have gotten sick am died because of this device

I put them all in the same cup and calibrated together. Holy crap man. Who knew?

If i buy this. do i need to calibrate first time before use. Or is calibrated already out of the box?

So this meter auto-calibrates? I have seen very similar looking meters but the videos for them talk about using a small screwdriver to turn something on the unit to adjust the calibration,

Do i have to use all solutions or canni just use the one?

I checked my back pack an some of the things that were in it like my pH pen an push button an it came on how did that come on when it's battery operated an I couldn't buy batteries until I'm with the group or back in college memory issues on that but it was on I feel the need to tell it

I did say I have my back pack with me every where I go except when I went shopping for food they wanted me to leave my bag up front