Hanna Instruments Marine Low Range Nitrate Checker HC - HI781

Hanna Instruments Marine Low Range Nitrate Checker HC - HI781

  • $69.95
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2-10 days

The Hanna Marine Low Range Nitrate 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 absorbance and ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Marine Nitrate 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.


    • Range: 0.0 to 5.0 ppm (as NO3-) / 0.0 to 50 ppm (calculated) using dilution
    • Resolution: 0.01 ppm
    • Precision: ±0.25 ppm ±2% of reading @ 77°F (25°C) / ±2.5 ppm ±5 of calculated reading using dilution
    • Light Source: LED @ 525 nm
    • Light Detector: Silicon photocell
    • Environment: 0 to 50°C (32 to 122°F); max 95% RH non-condensing
    • Battery Type: (1) 1.5V AAA
    • Auto-off: After 10 minutes of non-use and after read
    • Dimensions: 81.5 x 61 x 37.5 mm (3.4 x 2.4 x 1.5")
    • Weight: 64 g (2.25 oz.)
    • Method: Colorimetric method
    • Interferences: Nitrite, copper