User guide

SPECIFICATIONS

PRECISION AND ACCURACY

Range 0.000 to 0.600 mg/L (as NO

¯-N)

Resolution 0.001 mg/L

Accuracy ±0.020 mg/L ±4% of reading @ 25°C

Typical EMC Deviation ±0.001 mg/L

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band interference filter @ 525 nm

Method Adaptation of an EPA approved method. The reaction between Nitrite

and the reagent causes a pink tint in the sample.

Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing

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 93707-0 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.