NO3-11 LAQUAtwin Compact Nitrate Meter

 Usually Stocked 

$595.00 ex GST

SKU: NO3-11
Categories: Compact Meter
Tags: Food & Beverage, Nitrate, Plant Sap


This equipment contains button batteries and is not intended for general consumer use.

(i)  the equipment is intended to be used in trades, professions or industries only;
(ii)  the equipment is not intended for sale to the general public;
(iii)  the equipment is not intended to be used where children are present;


Introducing the only compact meter designed for rapid measurement of nitrate ion and nitrate-nitrogen concentrations, utilizing ion-selective membrane technology. With flat sensor technology refined over 60 years of sensor engineering, it enables dependable and direct measurements from just a drop of sample, starting from 0.3 mL. Utilize a sampling sheet (available separately) to extend measurements down to 0.05 mL or more. Its unique sensor mechanism facilitates direct measurements of solid, viscous, and powder samples, eliminating the need for a beaker during calibration or measurement. Simply drop the standards and sample onto the flat sensor, saving time and minimizing sample wastage. This lightweight, pocket-sized meter finds utility in research and industrial applications across diverse fields.

Key Applications:

  • Soil and sap testing for enhanced agriculture
  • Food testing (Note: Only detects ions in water; cannot measure electrolytes in oils. Ion measurement may be affected by non-target ions.)

Key Functions:

  • Autocalibration function capable of recognizing standards, with user-selectable options for one- or two-point calibrations
  • Automatic range change feature
  • Temperature compensation functionality
  • IP67 waterproof rating for durability and reliability
  • Auto hold function for ease of use
  • Automatic power-off after 30 minutes to conserve battery life

Also known as:
Nitrate meter, compact nitrate meter, pocket nitrate meter, nitrate ion meter, nitrate ISE meter, HORIBA nitrate meter, LaquaTwin nitrate meter, nitrate in plant sap

Measurement principle Ion electrode method
sample volume
0.3mL or more*1
Measurement range NO3:6 to
NO3-1.4 to
Range and Resolution
(Valid numbers)
①0 to 99ppm : 1ppm
②100 to 990ppm : 10ppm
③1000 to 9900ppm : 100ppm
Calibration Two-point*4
Accuracy ±10% of reading value.*5
Functions Auto range change・Temperature compensation・Waterproof*6・Reading locking ・Automatic power off (30 minutes)
Display Custom (monochrome) Digital LCD with backlight
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
164mm × 29mm × 20mm  (excluding projections) / Approx. 50 g (meter only, without batteries)
Accessories included 2 CR2032 batteries/1 Pipette/Instruction manual/Quick manual/Storage case
Standard solution
150 and
5 pieces
sampling sheet B

*1 Smaller amount(0.05mL or more) can be measured with the sampling sheet B.  (Please close the light shield cover. If a sample that contain particulate, please use ”Sampling sheet holder” (sold separately))
*4 Selectable between one-point and two-point calibrations.
*5 Repeatability in measurement of a standard solution after calibration using the same standard solution.
*6 IP67:no failure when immersed in water at a depth of 1 meter for 30 minutes. But the product can not be used underwater.