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HI 93735
Full Range
of Total Hardness in ppm, °fH, °dH and °eH
·
Description
Total hardness, that is the presence of magnesium and
calcium, is due mainly to the run-off water dissolving these salts as it
flows or filters through different
strata.
Hardness can also cause scaling of pipes in
cooling and heating systems. Reverse osmosis and demineralization also increase
hardness levels.
The HANNA® hardness meter, HI 93735,
measures total hardness in three different scales: 0 to 250, 200 to 500 and 400
to 750 ppm,
covering an extensive range
of applications.
With HI 93735 hardness can be measured in ppm (mg/L) as well as in French (°fH),
German (°dH) and English
hardness (°eH).
The reading is expressed directly in ppm
and it is not necessary to use conversion tables and diagrams for
interpretation.
·
Specifications
Total hardness, that is the
presence of magnesium and calcium, is due mainly to the run-off water
dissolving these salts as it flows or filters through different strata.
Hardness can also cause scaling
of pipes in cooling and heating systems. Reverse osmosis and demineralization
also increase hardness levels.
The HANNA® hardness meter, HI
93735, measures total hardness in three different scales: 0 to 250, 200 to 500
and 400 to 750 ppm, covering an extensive range of applications.
With HI 93735 hardness can be
measured in ppm (mg/L) as well as in French (°fH), German (°dH) and English
hardness (°eH).
The reading is expressed directly
in ppm and it is not necessary to use conversion tables and diagrams for
interpretation.
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Range
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ppm
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0 to 250
mg/L; 200 to 500 mg/L; 400 to 750 mg/L
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Range
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ºf
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0 to 25; 20 to 50; 40 to 75
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Range
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ºD
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0.0 to 13.9; 11.1 to 27.8; 22.2 to 41.7
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Range
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ºE
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0.0 to
17.5; 14.0 to 35.0; 28.0 to 52.5
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Resolution
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1 mg/L (0 to 100 mg/L); 5 mg/L (100 to 750 mg/L)
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Accuracy
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±5 mg/L or ±4% of reading (0 to 250 mg/L);
±7 mg/L or ±3% (200 to 500 mg/L); ±10 mg/L or ±2%
(400 to 750 mg/L)
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Light
Source
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LED 470
nm
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Light Life
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Life of the instrument
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Light Detection
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Silicon Photocell
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Battery Type / Life
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1 x 9V /
approx. 40 hours of continuous use;
auto-off after 10 minutes of non use
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Environment
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0 to 50°C (32 to 122°F); RH max 95% non-condensing
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Dimensions
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180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
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Weight
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290 g
(10 oz.)
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Method
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Adaptation of the EPA 130.1 method. The reaction between
Ca or Mg and the reagents causes a red-violet tint in the sample.
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