Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

Lost my koi last year to a PH crash, it sucked, great kit for the money and very accurate, easy to use

Great item

I bought this kit of the 4 cal, 7 cal, and CalPod mostly for the CalPod. I like that calibration solution can be added for use that can then be sealed off to keep for a short period of time as well as be a nice modular solution holder to make calibration easier. I looked around to just buy the CalPod, which I could only find for ~20 at the cheapest. So, I bought the kit to get some calibration solution and the pod. It comes with some little labels for more than just pH, which is nice because I also wanted to do some EC calibration.

Worked well, easy to use, fast shipping

My only gripe is that it smells very strongly of wintergreen. Your instrument will smell of wintergreen even after you rinse it, meaning something is left coating your sensitive and highly expensive ph meter. This doesn't seem to impact performance however. And other reference materials are not as fairly priced, so its a good buy. My bottles arrived leak-free and were packaged well. I would reccomend this product as long as you can stand the minty-fresh smell that hangs around on your instrument for several days. Atleast it smells fresh i guess!

Love Apera.

Quality PH calibrating fluid for your PH meter at a fair price

I regularly use this product to recalibate my blue labs pH meter. Whenever I recalibrate, it reads to 4.0 and 7.0 and the meter calibrates successfully - exactly what it's supposed to do.Blue Labs recommends that you store your meter in the 4.01 solution in order to extend the life of your meter. I use a different product for that, but general knowledge agrees that this will extend the life of your meter.This product will do what is advertised at a reasonable price. You shouldn't be disappointed if you buy it too.