HANNA HC - HI770 Silica High-Range Checker®
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.
| SKU | HI770 |
| Name | Silica High-Range Checker® HC – HI770 |
| Silica Range | 0 to 200 ppm |
| Silica Resolution | 1 ppm |
| Silica Accuracy | ±2 ppm ±5% of reading |
| Silica 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. |
| Photometer/Colorimeter Light Source | LED @ 470 nm |
| Photometer/Colorimeter Light Detector | silicon photocell |
| Battery Type/Life | (1) 1.5V AAA |
| Automatic Shut-Off | after ten minutes of non-use |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Weight | 64 g (2.25 oz.) |
| Dimensions | 81.5mm x 61mm x 37.5mm (3.2 in. x 2.4 in. x 1.5”) |
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