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เครื่องโฟโตมิเตอร์-พีเอช,ความกระด้างทั้งหมด (pH and Total Hardness Photometer)

HI 93725

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.

Order Information:
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 pH 0.1 pH
Resolution Total Hardness 0.01 mg/L
Accuracy pH ±0.1 pH
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)


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    โทร. 081-847-6768, 02-191-3928 แฟ็กซ์. 02-191-3929 

    คุณโทณิวัฒน์ 085-811-4779 , คุณนารีรัตน์ 085-814-9653

    E-mail : , IDline: @alltestkit


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