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always wash your hands immediately after use and before any contact with your nose
promptly & thoroughly wash eyes with water & seek medical attention
Potassium (min) 0
or overlayered with river rock
Hanna Instruments Nitrite Low Range Checker underwater sealant always wash your hands immediatelyThe Hanna Nitrite Low Range Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine absorbance and ion concentration. Professional
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