5
SPECIFICATIONS
PRECISION AND ACCURACY
Range
0.0 to 30.0 mg/L
Resolution
0.1 mg/L
Accuracy
±0.5 mg/L ±10% of reading@ 25°C
Typical EMC Deviation
±0.1 mg/L
Light Source
Tungsten lamp
Light Detector
Silicon Photocell with narrow band interference filter @ 525 nm
Method
Adaptation of the cadmium reduction method. The reaction between nitrate-
nitrogen and the reagent causes an amber tint in the sample.
Battery Type
1 x 9 volt
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
360 g (12.7 oz.).
REQUIRED REAGENTS
Code
Description
Quantity/test
HI 93728-0
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
10.0 mg/L nitrate and a representative lot of
reagent, an operator obtained with a single
instrument a standard deviation of 0.3 mg/L.