LAQUAtwin Nitrate Ion Meter for Soil

• Measurement Principle: Ion Selective Electrode
• Minimum Sample Volume: 0.3ml (0.05ml with sampling sheet B)
• Nitrate (NO3-) Measurement Range: 6 to 9900 ppm (mg/L)
• Nitrate-Nitrogen (NO3-N) Measurement Range: 1.4 to 2200 ppm (mg/L), 0.7 to 1100 kg/10a
• Resolution: 6 to 99 ppm: 1 ppm, 100 to 990 ppm: 10 ppm, 1000 to 9900 ppm: 100 ppm
• Accuracy: ± 10% of actual value
• Calibration Points: Up to 2
• Temperature Display: 0 to 50.0 ºC
• Display: Custom (monochrome) digital LCD with backlight
• Operating Temperature: 5 to 40.0 ºC
• Operating Humidity: 85% or less relative humidity (no condensation)
• Power: CR2032 batteries (2)
• Battery Life: Approx. 400 hours in continuous use without backlight
• Material: ABS epoxy
• Dimensions: 164 x 29 x 20 mm (excluding projections)
• Mass: Approx. 55 g (including sensor and batteries)
• Functions:
  • Auto Standard Recognition
  • Changeable High & Low Calibration Values
  • Temperature Calibration
  • Multiplication Compensation
  • Auto Hold / Auto Stable Measurement
  • Switchable Backlight
  • Automatic Power Off (30mins)
  • Low Battery Indicator
  • IP67 Dust / Waterproof
  • Replaceable Sensor

Servicing Options Available

Have you considered your servicing requirements? Much like a car, scientific instruments may need a bit of care to keep them working reliably and at their most accurate.

The Camlab Service Department have over 60 years experience in scientific instrumentation. We have a number of highly qualified internal and field-based service engineers able to perform a variety of jobs including preventative maintenance servicing and calibration.

Camlab can offer yearly service contracts which include two main types of preventative maintenance/calibration services – the back to base service and an engineer visit to your site. These options are can be offered with differing turn around times depending on the instrument type and your requirements along with loan instruments if available.

Request a quote for your servicing requirements today.

Quote Request

LAQUATWIN Three Step Measurement

Follow simple, good testing procedures for accurate and dependable results:

• Calibrate correctly
• Avoid mixing samples and standards
• Always keep the sensor clean

1 Calibrate

Always ensure the sensor is clean before calibrating. If not, clean thoroughly with water (don’t worry, LAQUAtwin meters are completely waterproof!). Place some standard solution on the sensor and press the calibration button. Once the smiley face appears, indicating that calibration is complete, wash off the standard solution with water and dry with a clean, soft tissue.

2 Test

LAQUAtwin meters only need a tiny amount of sample - so no beaker is necessary. Fill the sensor with the sample and when the smiley face appears, the measurement is complete.

3 Clean

Clean the sensor thoroughly with water, ready for the next test. When the sensor is nearing the end of its usable lifetime, it can be replaced;

• You don’t need to replace the meter.
• Sensors will need to be replaced after approx.

1500 measurements or when calibration cannot be completed. Sensors are sold separately and are easily removed and replaced.

LAQUATwin One meter Six Different Methods

Choose the best method according to your sample, your situation and your needs.

• Immersion: When you’re in the lab, you can test the sample in a beaker. Ensure the sensor guard sliding cap is open.
• Scoop: Use as a scoop to test water, for example from a river.
• Drops: LAQUAtwin meters can measure sample volumes as low as 0.05 mL. Place a drop of the sample onto the sensor with a pipette. Using the HORIBA sampling sheet, volumes down to 0.05 mL can be tested (except for conductivity measurements).
• Solid samples: Foods containing some moisture can be tested by placing a small piece directly onto the sensor.
• Powders: LAQUAtwin meters can also test dry powders. Simply place the powder sample onto the sensor, and drop on your defined volume of pure water.
• Paper and textiles: To test sheets of paper and textiles, cut up the sample into small pieces and place directly onto the sensor. Drop on your defined volume of pure water.

LAQUAtwin sampling sheet.

The sampling sheet allows trace volumes to be analysed. For example, you can even measure the pH of human skin by wiping with a sampling sheet soaked in pure water, and placing it on the sensor. Using the HORIBA sampling sheet, volumes down to 0.05 mL can be tested (except for conductivity measurements).