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In StockSilica is found in all natural waters in the dissolved mineral form. Silica is only slightly soluble in water; solubility and therefore the form of silica in water depends on the pH level of the water and on the minerals containing silica in contact with water.
Silica’s presence in industrial applications is undesirable since it causes scale. In particular, high pressure turbines are highly effected by this factor.
Heating systems and reverse osmosis plants also require monitoring of silica.
The HI 96705 meter measures the silica (SiO2) content in water and wastewater in the 0.00 to 2.00 mg/L (ppm) range.
Range : 0.00 to 2.00 mg/L (ppm)
Resolution : 0.01 mg/L (ppm)
Accuracy : ±0.03 mg/L ±3% of reading @ 25°C
Light Source : Tungsten lamp
Light Detector : Silicon photocell with narrow band interference filter @ 610 nm
Environment : 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Power Supply : (1) 9V battery
Auto-off : After 10 minutes of non-use in measuring mode; after 1 hour of non-use in calibration mode
Dimensions : 192 x 104 x 69 mm (7.6 x 4.1 x 2.7″)
Weight : 360 g (12.7 oz.)
Method : Adaptation of the ASTM D859 method of the heteropoly blue method
Range : 0.00 to 2.50 ppm (mg/L)
Resolution : 0.01 ppm (mg/L)
Accuracy @ 25°C : ±0.03 ppm ±3% of reading
Light Source : LED @ 525 nm
Light Detector : Silicon photocell
Environment : 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type : (1) 1.5V AAA
Auto-off : after two minutes of non-use and ten seconds after reading
Dimensions : 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight : 64 g (2.25 oz.)
Method : adaptation of USEPA method 330.5, DPD method
