Hanna High Range Copper Colorimeter - Checker HC Medium Bird Toys Do not clean Bioholster when

Do not clean Bioholster when replacing the cartridge as it contains beneficial biological bacteria

fresh chicken liver (5%)

Good for use before introducing new corals

This standard dosage produces a concentration of 15 ppm (= 15 mgL) formalin and 0

Hanna High Range Copper Colorimeter - Checker HC Medium Bird Toys Do not clean Bioholster whenColour charts can often be misinterpreted and inaccurate. Hanna Checker provides an accurate measurement everytime! This high range copper colorimeter elimates the need to try and match a colour on a strip to a colour chart, allowing you to see exactly how much copper is in your water digitally. Simple one button design for quick results Easy to read display Compatible with fresh or saltwater