Only compact meter for a quick and reliable measurement of nitrate ion at the scene. Special application packages for crop (B-741) and soil (B-742) are also available.
Applications include: Soil testing; food quality control; cultivation management; food quality control; growth management of crops.
- 2 CR2032 batteries
- 1 Pipette, Instruction manual
- Quick manual
- Storage case
- 2 x 14 mL Standard solutions (high & low)
- 5 pieces of sampling sheet B
|Model||B-743 - General|
|Measurement principle||Ion electrode method|
|Minimum sample volume||0.3 mL (0.05 mL with sampling sheet B)|
|Measurement range||NO3-: 62 to 6200 ppm (mg/L)
(10-3 to 10-1 mol/L)
NO3--N: 14 to 1400 ppm (mg/L)
|Resolution||• 0 to 1.0 ppm: 0.1 ppm
• 0 to 99 ppm: 1 ppm
• 100 to 990 ppm: 10 ppm
• 1000 to 9900 ppm: 100 ppm
|Accuracy||±10% of reading value|
|Compensation setting||Multiplication (0.01 to 9.90) or Known Factor (-1000 to 1000)|
|Functions||Auto range change • Temperature compensation • IP67 Water/Dust proof • Auto Hold • Automatic power off (15 minutes)|
|Display||Custom (monochrome) digital LCD|
|Operating temperature/ humidity||5 to 40°C, 85% or less in relative humidity (no condensation)|
|Power||CR2032 batteries (x2)|
|Battery life||Approx. 400 hours in continuous use|
|Main Material||ABS epoxy|
|Dimensions / Mass||164 mm x 29 mm x 20 mm (excluding projections)/Approx. 50 g (meter only, without batteries, EC meters approx. 45 g)|
Drop a sample with a pipette; small volumes as 0.1 mL can be measured. Using sampling sheet B, volumes down to 0.05 mL can be tested.
When you're in the lab, you can test the sample in a beaker. Ensure the sensor guard sliding cap is open.
Use as a scoop to test water from a river. Vertical scoop is available with a unique sensor guard.
The sampling sheet allows tiny, trace volumes to be analysed. For example, wipe off the surface of the skin with a sampling sheet soaked with pure water and measure.
Foods containing some moisture can be tested by placing a small piece directly onto the sensor.
LAQUAtwin meters can also test dry powders. Simply place the powder sample onto the sensor, and add an appropriate amount of pure water.
Paper, textiles and films
To test sheets of paper and textiles, cut up the sample into small pieces and place them directly onto the sensor then add a defined amount of pure water.