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Horiba B-340 Series Compact Nitrate Meters

condition: Brand NewPart #: HR-B-340Availability: Out of StockInfo Message: DISCONTINUED ITEM
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DISCONTINUED ITEM - Recommended Replacement: Horiba NO3-11 Series LAQUAtwin Nitrate (NO3) Meters

Three models of the twin NO3 meters are designed for general purpose nitrate measurements, agricultural applications to measure nitrate in plant leaves, and nitrate in soil samples. Flat sensor technology enables measurements with only a few drops of sample. Measurements are simple, quick, and accurate.

  • Waterproof construction.
  • Automatic calibration (selection of 1 point or 2 point calibration)
  • Wide measuring range.
  • As little as 0.3 ml (6 drops) of sample required.
  • Selectable analysis of nitrate or nitrate as nitrogen.
  • Selectable units of measure (ppm, mg/L, kg/10a)


B-341, B-342 and B-343

Measurement principle

Ion electrode method

Sample volume required
for measurement

0.3 mL to 2.0 mL



B-341 100-9900ppm;B-342 30-600 ppm:B-343 62 to 6200(ppm or mg/L)


B-341 23-2300ppm;B-342 6.8-140ppm;B-343 14 to 1400(ppm or mg/L-N)


±10% *1


4-digit digital LCD display

Waterproofing standard

CR2032 coin batteries(x2)

Auto power off

30 minutes

Outer dimentions

165 mm x 29 mm x 19 mm (excluding projections)


approx. 52 g (meter only)


5°C to 40°C, 85% relative humidity max.
(no condensation)

Operation switches

3 switches (power, calibration, measurement)


Standard solutions, Instruction Manual, Dropper pipet
Models B-341 and B-342 includes kits with carrying cases and supplies needed to perform crop and soil analyses.

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