Silica Low Range Colorimeter HI705 Hanna Checker - Fresh Water

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Silica Low Range Colorimeter HI705 Hanna Checker - Fresh Water

SKU: 208597

reg. $48.99

Special Price: $42.99

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Quick Overview

Check for silica easily in your fresh water. The Hanna HI705 Checker HC Handheld Colorimeter for Silica LR bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable and easy to use. First, zero the instrument with your water sample and reagent A and B. Next, remove sample and add reagent C. Last, re-insert sample into the Hanna Silica LR Checker, press the button and read the results. Done.

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Product Questions

Why is this product designated only for freshwater? I know the instructions indicate that no debris is allowed in the sample but other sites do not list this as specifically for freshwater or saltwater only.
Question by: Todd Conner on Mar 6, 2016 8:06:00 AM
Great question!
We are sold the silica test kit from Hanna as a freshwater only unit. This is recommended for use on RO water to ensure the membrane is removing the silica as well with RO/DI water. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 9, 2016 4:33:00 PM

Full Details

HI705 Silica Low Range Colorimeter Manufacturer's Manual


  • Easier to use and more accurate than chemical test kits
  • Large, easy to read digits Auto shut-off
  • Dedicated to a single parameter
  • Designed to work with HANNA's powder reagents
  • Uses 10 mL glass cuvettes
  • Small Size, Big Convenience
  • Fits in the palm of your hand


  • Range: 0.00 to 2.00 ppm
  • Resolution: 0.01 ppm
  • Accuracy: ±0.03 ppm ±5% of reading at 25°C
  • Light Source: Photodiode @ 610 nm
  • Light Detector: Silicon photocell
  • Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
  • Battery Type: (1) 1.5V AAA
  • Auto-off: After 10 minutes of non-use
  • Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
  • Weight: 64 g (2.25 oz.)
  • Method:Adaptation of the ASTM D859 method of heteropoly blue method. The reaction between silica and reagents causes a blue tint in the sample.


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