6
SPECIFICA
TIONS
PRECISION AND ACCURACY
Range
0.000 to 0.600 mg/L
(NO
2
‑
‑N)
Resolution
0.001 mg/L
Accuracy
@25 °C (77 °F)
±0.020 mg/L ±4% of reading
Light Source
Tungsten lamp
Light Detector
Silicon Photocell with narrow band interference filter @525nm
Method
Adaptation of an EPA approved method. The reaction between Nitrite
and reagent causes a pink tint in the sample.
Environment
0 to 50 °C (32 to 122 °F); max 95% RH non‑condensing
Battery Type
9V (1 pc.)
Auto‑Shut off
After 10’ of non‑use in measurement mode;
after 1 hour of non‑use in calibration mode;
with last reading reminder.
Dimensions
192 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight
320 g (11.3 oz.).
REQUIRED REAGENTS
Code
Description
Quantity/test
HI93707‑0
Nitrite Low Range Reagent
1 packet
Precision
is how closely repeated measurements
agree with each other. Precision is usually
expressed as standard deviation (SD).
Accuracy
is defined as the nearness of a test result
to the true value.
Although good precision suggests good accuracy,
precise results can be inaccurate. The figure
explains these definitions.
In a laboratory using a standard solution of
0.100 mg/L Nitrogen‑Nitrite and a representative
lot of reagent, an operator obtained with a single
instrument a standard deviation of 0.001 mg/L.