Benchmark Magnesium Buffer

Replacement magnesium buffer for the Benchmark Calcium & Magnesium Test Kit. 59 mL pH 10 magnesium buffer Add 0.50 mL to a 5.00 mL aquarium-water sample One replacement reagent only; indicator, titrant and testing tools are not included Use only as directed with the Benchmark Magnesium Indicator and Magnesium Titrant. Best value: Need every calcium and magnesium reagent? Choose the Calcium & Magnesium Refill Reagents. Need the tools too? Choose the complete test kit. For aquarium testing only. Avoid breathing vapour, keep out of reach of children, and read the product label and SDS before use.