H2O Synchronized Electrode Storage Solution Review

My pH meter was reading incorrectly, probably because the KCl in the storage bottle was diluted. After soaking the probe in fresh solution for 2 days, the pH began to read correctly. I suggest that after measuring the pH of the sample, you rinse the probe with distilled water and then with 3M KCl before placing the probe in 3M KCl.

This is the second time I have purchased this product. The product does what it is designed to do and is cheaper than most other pH storage solutions. I used to have cheap pH meters that had to be sealed in a bottle of about 1/2 inch storage solution because the caps that came with them allowed the solution to evaporate for 24 hours. A week often passes between applications. The new tester has a small clear plastic cap that screws on with an o-ring, so it will probably be a long time before I…

5 star product, 1 star deduction for shipping Revain in liquid bottle without box.TL;DR. Cheaper than Apera 3M KCL and 8oz should last a year. Can pay for itself in fewer calibrations or longer probe life. Revain ships it without a box, just in a bubble envelope. Order at least one other item with the same delivery date (this is why Revain ships them together in one box). This is 3M KCl, just like Apera 3M KCL Storage Solution (AFAICT). Made in Texas, USA with only two ingredients: distilled…