Hanna HI 713 Phosphate Photometer for Marine Aquariums Gliserin • The OPM 4-4C is

• The OPM 4-4C is calibrated at 850

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Excellent unit to double benchmark for quality

Hanna HI 713 Phosphate Photometer for Marine Aquariums Gliserin • The OPM 4-4C isItem Description: Brand New Hanna Instruments HI 713 CheckerHC Free Phosphate Photometer 0. 00 2. 50 ppm(mg l) NO REAGENTS FINALLY! A SIMPLE LOW LEVEL PHOSPHATE TEST! THIS LISTING IS FOR: (1) HANNA HI713 PHOSPHATE CHECKER Hanna HI 713 Checker Colorimeter SPECS: Range 0. 00 to 2. 50 ppm (mg L) Resolution 0. 01 ppm (mg L) Precision 0. 04 ppm (mg L) 4% of reading @ 25C Light Source LED @ 525 nm Light Detector Silicon photocell Environment 0 to 50C (32 to