Simply the most reliable pocket pH tester with the best value for general-purpose pH testing e.g. hydroponics, horticulture, pools and spas, water treatment, beverage making, education, environmental monitoring, etc. Up to 3 points of Auto. calibration and 0 to 50˚C Auto temperature compensation (AT...

The Apera Instruments AI1108 pH calibration buffer solution Kit includes two 8oz bottles of pH buffer solutions (pH 4.00 & pH 7.00), and one 4oz bottle of 3M KCl storage solution for pH/ORP electrodes. The color-coded buffer solutions are standardized against NIST certified pH References within 0.01...

Apera Instruments AI1114 pH calibration buffer solution Kit includes two 16oz bottles of pH buffer solutions (pH 4. 00 & pH 7. 00); plus Aprea's unique CalPod solution holder for easy calibration. The color-coded buffer solutions are made with high-purity chemicals and are standardized against NIST...