Hanna Instruments HI770 Checker Silica High Range
The Hanna Silica High Range Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Silica High Range Checker® uses a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.
The HI770 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure silica. Silica is found in all natural surface and saline waters in the dissolved form. Due to the potential to cause scaling, it is undesirable and therefore monitored in industrial applications, and heating and reverse osmosis systems.
| Range | 0 to 200 ppm |
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| Resolution | 1 ppm |
| Accuracy @ 25°C/77°F | ±2 ppm ±5% of reading |
| Light Source | LED @ 470 nm |
| Light Detector | silicon photocell |
| Method | adaptation of the USEPA method 370.1 for drinking, surface and saline waters and Standard Method 4500-SiO₂ C for domestic and industrial waters. |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Battery Type | (1) 1.5V AAA |
| Auto-off | after ten minutes of non-use |
| Dimensions | 81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”) |
| Weight | 64 g (2.25 oz.) |
| Ordering Information | HI770 Checker® is supplied with (2) sample cuvettes with caps, silica HR reagent starter kit for 6 tests (6 powder reagent packets), battery, instructions and quick start guide. |
| Warranty | 6 month limited warranty |
| Manufacturer | Hanna Instruments |
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