CheckerHC - Model HI 705 -Handheld Colorimeter - Silica Low Range

1.) Step One - Add a sample to the included cuvette.  Add reagent “A” and “B”
2.) Step Two - Insert sample into the Checker and zero it out
3.) Step Three - Remove sample and add reagent “C”
4.) Step Four – Reinsert sample and click the button to measure your results or…
- Press and hold the button for 3 seconds for a time reaction reading

The HI 705 uses an adaptation of the ASTM D859 method of heteropoly blue method. The reaction between silica and reagents causes a blue tint in the sample.

• Small palm-sized design
• Accurate from ±0.03ppm ± 5% of reading
• Dedicated to a single parameter
• Uses a single AAA battery
• Auto Power Off after 10 minutes in inactivity
• Built-in timer for timed reaction readings

• Water Quality
• Education
• Environmental
• Water Treatment (Boilers/Cooling Towers)

Range: 0.00 to 2.00 ppm:
Resolution: 0.01 ppm:
Accuracy (@25°C/77°F): ±0.03ppm ± 5% of reading:
Measurement Method: Colorimetric:
Light Source: Photodiode @610 nm:
Method: Adaptation of the ASTM D859 method of heteropoly blue method:
Light Detector: Silicon photocell:
Power Supply: Auto off after 10 min. of inactivity:
Environment: Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing:
Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”):
Weight: 64 g (2.25 oz.)