KH/ALKALINITY PRO REEF TEST KIT Advanced titration test measuring the level of Buffers in your reef aquarium, with exceptionally high accuracy of 0.05 meq/l (0.14 dKH) Red Sea’s KH/ALKALINITY PRO Reef Test Kit is an advanced titration test, measuring the level of buffers in your reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dKH). The KH/ALKALINITY PRO Reef Test test kit enables the accurate dosing of Red Sea’s KH/ALKALINITY Foundation B supplement which is part of the complete Red Sea Reef Care Program.