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HORIBA B-342 SOIL NITRATE THERMOMETER

Producer: HORIBA

Category: Temperature and humidity meter

Ammonia from fertilizer or animal manure, when oxidized, produces nitrate, which is one of the three most essential nutrients for plants (along with phosphorus and potassium).
Use the LAQUAtwin B-342* meter to measure nitrate ion content with only 0.3mL of sample**.
(*) Can only detect ions in water; It is not possible to measure electrolytes in oil. Ion measurements can be affected by unwanted ions.
(**) 0.05mL when using Horiba sampling plates.

SPECIFICATIONS:

Model	B-342 (soil test)
Measuring principle	Ion selective electrode
Minimum sample volume	0.3 mL (0.05 mL with sampling plate)
Measuring range^*1	NO3: 100 ~ 9900 ppm (mg/L) NO3-N: 23 ~ 2200 ppm (mg/L)
Resolution	• 0 ~ 1.0 ppm: 0.1 ppm • 0 ~ 99 ppm: 1 ppm • 100 ~ 990 ppm: 10 ppm • 1000 ~ 9900 ppm: 100 ppm
Calibration	Two points
Accuracy	±10% of reading value
Compensation settings	Multiply (0.01 ~ 9.90) or by a known coefficient (-1000 ~ 1000)
Functions	Automatically change measuring range Temperature compensation Water/dust resistant according to IP67 standard^*2 Automatically holds measurement values Automatically turns off (after 15 minutes)
Display	Single color LCD
Operating temperature/humidity	5 ~ 40^oC/less than 85%
Battery life	About 400 hours continuously
Manufacturing materials	ABS epoxy
Size/weight	164 x 29 x 20mm / ~50g
Accessories included	2 CR2032 batteries / 1 pipette / User manual / Quick guide / Carrying case / 14mL ion standard solution set for plants (300ppm and 5000ppm) / kit for testing plant samples^*3
Order code	HORIBA B-342
Ion selectivity coefficient^*4	I- = 10 Cl- = 4×10^-2 Br- = 9×10^-1 ClO4- = 3×10^-3 NO2- = 7×10^-1 pH 2-9 (at 10^-3 mol/L NO3-)

^*1Display flashes when value is out of measuring range

^*2IP67: withstands water at a depth of 1 meter for 30 minutes; But cannot be used underwater

^*3 Soil sample test kit (for B-342):

– 04 Pipettes

– 01 bottle of electrode cleaning solution (250mL)

– 03 bottles of extraction solution (100mL)

– 02 Sampling spoons

– 01 Tweezers

– 01 set of sampling plates

– 02 Sampling plate holders

^*4 The ion selectivity coefficient is the ratio between the concentration of the interfering ion and the ion to be measured. For example, the selectivity coefficient of potassium over sodium is 1 x 10^-2, which means that in a sample with equal potassium and sodium ion concentrations, the sodium ion measurement will be approximately x 10^-2 (1%).