Hanna Instruments HI96708C, Instruction Manual, Page: 6 / 28

6
SPECIFICA
TIONS
PRECISION AND ACCURACY
Range 0 to 150 mg/L
Resolution 1 mg/L
Accuracy
@25 °C (77 °F)
±4 mg/L ±4% of reading
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band interference filter @575nm
Method
Adaptation of the Ferrous Sulfate method. The reaction between Nitrite
and reagent causes a greenish‑brown 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
HI93708‑0 Powder 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
75 mg/L and a representative lot of reagent,
an operator obtained with a single instrument a
standard deviation of 4 mg/L.