I'm happy with the drops, they seem accurate and I can test them with my PH solution packets when they arrive.
I looked into the BlueLabs pen and was considering buying one when I was informed about the drops.
I looked into storage solution and a science teacher makes his own with 4.01 test solution with some KCl added, but what you mentioned, sounds easier and I can constantly monitor the readings from the pens.
The 7 PH solution is closer to the range that I am working with, so I figure the pens will be more accurate in the 5.4-6.5 range.
Is there any issue with using the test solution as a storage Solution?
Does it go bad or anything, or wear out?
the readings will askew over time. I change my solutions every 2 weeks and keep the different buffer's in little 30ml medicine cup inside of a glass tupperware or snaplock what ever you're country calls em lol. And yea it is really easy and confidence building knowing using the 7ph solution that if you turn the pen on with cap on, and it read out side of 7 to calibrate it. Really keeps things accurate and consistent.
Looks like you're in the same province as me. If you want a new pH pen. I have a Dr.Meter Ph pen that works surprisingly well for a china meter, can hold cal for about 10days before askewing. I'll be upgrading my pen soon. I'll give you my old one if you would like it. I'll have multiple meters that can check pH, so I don't need the Dr.Meter Ph pen. if you feel comfortable pm'ing me you're address I'll note it and ship it out once I get the new one.
Great looking buds man! Looking nice n snowy over there!
got a bluelabs ph pen for a couple years now, and im so lazy with it but it still works fine. i think ive had to calibrate under ten times, whenever i do itll be about .1-.2 off. i also dont even bother using any storage solution, i use it at least a couple times every week so it stays wet in the cap anyways.Got to spend over 75$ on a good meter. China pens are well to put it lightly garbage. BlueLabs, Apera or Hanna is the go to. Just go to grow shop and get ph solution 4 and 7, probably cost 30$ total for both, and most good hydro shops have calibration solution. Store probes in ph solution #7. KCI I personally find isn't needed. my meters stay calibrated within .01-.06 after 2 weeks of storage. If are growing in soil I'd suggest getting a BlueLabs soil ph pen, best 250$ you will spend.