HI770 Silica High-Range Checker® HC

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.

• Compact, Portable Design
• Built-in Timer
• One-Button Operation

• 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″ x 2.4″ x 1.5”)
  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.