pH and Total Hardness Photometer with 555 nm LED
Constant monitoring of hardness levels is critical in many applications.
Water hardness is easily noticed in laundry applications, where its presence greatly reduces the effectiveness of soaps and detergents.
High levels of hardness in the water supply is also a major industrial concern.
The scaling caused by hard water in pipes and equipment can cause costly loss of efficiency and result in the failure of machinery.
Unlike multi-parameter colorimeters or spectrophotometers, the HI 93725 is very simple to operate: just zero your sample, pour the reagent in the cuvet, and take a direct reading.
HI 93725 is supplied with 3 cuvets, battery and instructions.
|Range||pH||5.9 to 8.5 pH|
|Range||Total Hardness||0.00 to 4.70 mg/L|
|Resolution||Total Hardness||0.01 mg/L|
|Accuracy||Total Hardness||±0.11 mg/L ±5% of reading|
|Light Source||LED 555 nm|
|Light Life||Life of the instrument|
|Light Detection||Silicon Photocell|
|Battery Type / Life||1 x 9V / approx. 40 hours of continuous use; auto-off after 10 minutes of non use|
|Environment||0 to 50°C (32 to 122°F); RH max 95% non-condensing|
|Dimensions||180 x 83 x 46 mm (7.1 x 3.3 x 1.8″)|
|Weight||290 g (10 oz.)|
|Method||pH||Phenol red method|
|Method||Total Hardness||Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th ed. Calmagite/Colorimetric method|
|HI 93703-50||Solution for Cleaning Cuvets|
|HI 731321||Glass Cuvet for HI 937xx & HI 832xx Series Meters|
|HI 731325||Cuvet Cap Turbidity Meters & HI 937xx Series Meters|
|HI 710009||Shockproof Boot, Blue|
|HI 710010||Shockproof Boot, Orange|
|HI 731318||Tissue for Wiping Cuvets|
|Reagents & Standards|
|HI 93710-01||pH, Phenol Red Method (100 Tests)|
|HI 93710-03||pH, Phenol Red Method (300 Tests)|
|HI 93719-01||Hardness, Magnesium, EDTA Method (100 Tests)|
|HI 93719-03||Hardness, Magnesium, EDTA Method (300 Tests)|