Hanna Instruments HI 96770C, Instruction Manual, Page: 5 / 24

5
Range 0 to 200 mg/L
Resolution 1 mg/L
Precision ±5 mg/L @ 100 mg/L
Typical EMC Deviation ±1 mg/L
Light Source Light Emitting Diode
Light Detector Silicon Photocell with narrow band interference filter @ 466 nm.
Method Adaptation of the USEPA METHOD 370.1 for to drinking, surface and
saline waters, domestic and industrial wastes and Standard Method
4500-SiO
2
C. The reaction between silica and the reagents causes a
yellow 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 102 x 67 mm (7.6 x 4 x 2.6")
Weight 290 g (10 oz.).
REQUIRED REAGENTS
Code Description Quantity/test
HI 96770A-0 Silica HR Reagent A 1 packet
HI 96770B-0 Silica HR Reagent B 1 packet
HI 96770C-0 Silica HR Reagent C 1 packet
Precision Precision
Precision Precision
Precision is how closely repeated measurements
agree with each other. Precision is usually expressed
as standard deviation (SD).
Accuracy
Accuracy
Accuracy Accuracy
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 100 mg/L silica and a representative lot
of reagent, an operator obtained with a single
instrument a standard deviation of 5 mg/L.
SPECIFICATIONS
PRECISION AND ACCURACY