Hanna HI705 Checker Silica Low Range

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Hanna HI705 Checker Silica Low Range

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  • Hanna HI705 Checker 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)

Order Information:

The HI 705 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (1 bottle reagent A, 6 packets of reagent B, and 6 packets of reagent C), 1 x 1.5V AAA battery, and an instruction manual.


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.)

Quick Overview

The HI705 Checker Silica Low Checker is a simple, accurate, and cost effective way to measure low ranges of silica.  Designed as a more accurate alternative to chemical test kits, the HI 705 provides quick, accurate results in four easy steps. 

Additional Information

Manufacturer Hanna Instruments



HI705 MSDS Sheet (77.7 KB)