HANNA instruments HI 707 Checker®HC


HI 707 Checker®HC

The HI 707 Checker®HC is a simple, accurate, and cost effective way to measure low ranges of nitrite. Designed as a more accurate alternative to chemical test kits, the HI 707 provides quick, accurate results in four easy steps.   
1.) Step One - Add a sample to the included cuvette(s)   
2.) Step Two - Insert sample into the Checker and zero it out   
3.) Step Three - Remove sample and add reagent   
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 707 uses an adaptation of EPA diazotization method 354.1. The reaction between nitrite and the reagent causes a pink tint in the sample.
HI 707 Checker®HC
Depth 81.5 mm
Height 37.5 mm
Width 61 mm
Power Requirements 1 x 1.5V AAA battery
Weight 64 g
Part Number HI 707-0
Additional Specifications Range: 0 to 600 ppb NO2 -N   
Resolution: 1 ppb   
Accuracy (@25°C/77°F): ±20 ppb ± 5% of reading   
Light Source: Photodiode @470 nm   
Method: Adaptation of EPA diazotization method 354.1. The reaction between nitrite and the reagent causes a pink tint in the sample.


  • Small palm-sized design   
  • Accurate from ±20 ppb ± 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   
  • Aquariums   
  • Environmental   
  • Wastewater   


HI 707 Checker®HC

HI 707 Checker®HC

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