Red Sea’s user-friendly, and lower cost, MCP pH/Alkalinity Marine Test Kit A dual test kit includes an accurate (1 dkH/0.36 meq/l) titration test for KH and a colorimetric test for pH for monitoring these essential parameters in all marine aquariums. The Red Sea’s KH\ALKALINITY PRO test kit enables accurate dosing of Red Sea’s KH Coralline Gro or KH/ALKALINITY Foundation B Buffer Supplements in fish-only systems. Includes pH 100 tests, KH 55 tests. Red Sea pH / Alkalinity Marine Test Kit Specifications: Test Name Accuracy Range Test Type No. of test pH 0.2 7.6-8.6 Colorimetric 100 KH / Alkalinity 1 dKH / 0.36 meq/L 0- ∞ Titration 55