Chlorine, Free Ultra-HR Photometer
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Chlorine, Ultra-High Range Photometer with Cal Check
In response to the user's requirements for analyzing high concentrations of chlorine, HANNA® offers HI 96771, a portable auto-diagnostic photometer which measures free chlorine from 0 to 5.00 and 0 to 500 mg/L range. This meter was developed to check chlorine dosing in disinfection process such as the fruit and vegatable washing in the food industry. The advanced optical system employs a specialized tungsten lamp and a narrow band interference filter, assuring accurate readings. This instrument is equipped with Cal Check® validation function and standards to validate good performance at any time. The validation procedure is user-friendly and ensures that the meter is properly calibrated wherever you go with just a few quick steps.
Hanna photometers use the exclusive ready-made, NiST traceable standards to verify the performance of the instrument and recalibrate if necessary. Cuvets are constructed from specialized optical glass to ensure the best and most consistent results. The positive locking system ensures that the cuvet is in the same position every time it is placed into the measuring cell. Our sample cell is designed to fit a cuvet with a wide neck to make it easier to add both sample and reagents. All instruments are factory calibrated and the electronic and optical design minimizes the need for frequent calibration. Ideal for field applications, these meters are splash proof and the lamp and filter units are protected from dust or dirt by a transparent barrier. Display messages aid the user during routine operation. The auto-off feature will turn off the meter after 10 minutes of non-use in measuring mode or 1 hour while in calibration mode. HI 96771 utilizes an adaptation of Standard Methods for the Examination of Water and Wastewater, 20th Edition, 4500-Cl. The reaction between free chlorine and the reagents causes a yellow tint (UHR) or pink tint (LR) in the sample.
HI 96771C includes:
HI 96771 photometer, sample cuvettes with caps (2 ea.), CAL CHECK™ standard cuvettes (2), 9V battery, scissors, cloth for wiping cuvettes, instrument quality certificate, instruction manual and rigid carrying case.
*(Reagents are are not included and sold separately HI 93701-01 & HI 95771-01, 100 tests)
Range LR: 0.00 to 5.00 mg/L (ppm) UHR: 0 to 500 mg/L (ppm)
Resolution LR: 1 mg/L (ppm) (0.10 mg/L above 3.50 mg/L) UHR: 1 mg/L (ppm) (10 mg/L above 200 mg/L)
Precision LR: ±0.02 mg/L @ 1.00 mg/L UHR: ±2 mg/L @ 100 mg/L
Light Source Tungsten lamp
Light Detector Silicon photocell with narrow band interference filter @ 525nm
Power Supply (1) 9V battery
Auto-off After 10 minutes of non-use in measurement mode; After 1 hour of non-use in calibration mode; with last reading reminder.
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions 192 x 102 x 67 mm (7.6 x 4 x 2.6”)
Weight 290 g (10 oz.)