5
Range
Free Cl
2
0.00 to 10.00 mg/L
Total Cl
2
0.00 to 10.00 mg/L
Resolution
0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 mg/L above 3.50 mg/L
Precision
±0.06 mg/L @ 3.00 mg/L
Typical EMC Deviation
±0.01 mg/L
Light Source
Tungsten lamp with narrow band interference filter @ 525 nm
Light Detector
Silicon Photocell
Method
Adaptation of the USEPA method 330.5 and Standard Method 4500-Cl
G. The reaction between chlorine and the DPD 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
.
Dimensions
180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
Weight
290 g (10 oz.).
REQUIRED REAGENTS
Code
Unit
Description
Quantity/test
HI 93701-0
Free & Total Cl
2
DPD Powder Reagent
1 packet
HI 93734B-0
Free & Total Cl
2
Free & Total Cl
2
Reagent
5 mL
HI 93734C-0
Total Cl
2
Total Cl
2
Reagent
3 drops
SPECIFICATIONS
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 3.00
mg/L chlorine and a representative lot of reagent, an
operator obtained with a single instrument a standard
deviation of 0.06 mg/L..
PRECISION AND ACCURACY
