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เครื่องโฟโตมิเตอร์-ความกระด้างทั้งหมด,เหล็ก (Total Hardness and Iron Photometer)

HI 93741

Total Hardness and Iron Photometer with 555 nm LED

          HI 93741 can provide critical measurements of low range iron and total hardness (magnesium and calcium).

The iron concentration in water needs to be monitored since it can become harmful above certain levels. In domestic water, for instance, iron can alter the taste and make it unpleasant to drink. It can also stain laundry, damage kitchen wares and favor the growth of certain bacteria. Low levels of iron are also critical in beverage production.

Hardness, on the other hand, is indicative of the presence of calcium and magnesium in water. By passing through various layers of soil and rocks, rain water dissolves some of the mineral substances.

Hardness is a consequence of the type of rock layers which the water passes through and of its permanence in the water bearing stratum.

Hardness can cause pipe rusting in water heating and cooling systems, reverse osmosis and demineralization plants. It can also increase the consumption of soaps and detergents in industrial washing machines or laundries.

With the portable HI 93741 you can keep a watchful eye over both iron and hardness levels.

Order Information:
HI 93741 is supplied with 3 cuvets, battery and instructions.


Range Iron 0 to 400 µg/L
Range Total Hardness 0.00 to 4.70 mg/L
Resolution Iron 1 µg/L
Resolution Total Hardness 0.01 mg/L
Accuracy Iron ±10 µg/L ±8% of reading
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 Iron Adaptation of the TPTZ method
Method Total Hardness Adaptation of the Standard Methods for the
Examination of Water and Wastewater, 18th ed.


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 93746-01 Iron LR, TPTZ Method (100 Tests)
HI 93746-03 Iron LR, TPTZ 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 

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    E-mail : , IDline: @alltestkit


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