HANNA HI736 PHOSPHOROUS CHECKER, ULTRA LOW RANGE

The HANNA HI 736 Checker HC bridges the gap between simple chemical test kits and professional instrumentation. The HANNA HI?736 is both accurate and affordable.The HI 736 CheckerHC portable handheld colorimeter features a resolution of 1 ppb and 5 ppb 5% of reading accuracy and uses an adaptation of Standard Method Ascorbic Acid.