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HI95711
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22 Feb 2019
American Samoa
1 UNIT
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Spesifikasi

PH Meter

Clarkson HI95711

Free and Total Chlorine Photometer 0-5 ppm with 525 nm filter and Cal Check

Hanna  Instruments HI 95711

 

Description:

Total Chlorine is given by the sum of free chlorine plus combined chlorine: free chlorine combines

with nitrogen to produce chloramines (combined chlorine). Chloramines is harmful for aquatic life and

damages water treatment plants that use membranes for water purification (i.e. reverse osmosis).

Therefore it is important to monitor the level of free and/or total chlorine often.

 

The chloramines concentration in water depends on pH, temperature, the initial ratio of chlorine

versus amine, chlorine demand and the time of reaction. Both forms of chlorine (free and combined)

can exist at the same time, though they need to be measured separately.

 

• HI 95711: wide range for free and total chlorine.
• HI 95761: trace total chlorine for ion-exchange membranes and resins.
• HI 95724: the same specifications of HI 95711 but uses liquid reagents.

Finally, instrument validation is possible at any time with Cal Check standard cuvets.

 

Specifications:

Range

Free Chlorine

0.00 to 5.00 mg/L

Range

Total Chlorine

0.00 to 5.00 mg/L

Resolution

 

0.01 mg/L

Accuracy

 

±0.02 mg/L to 1.00 mg/L

Light Source

 

Tungsten lamp with narrow band interface filter 525 nm

Light Detection

 

Silicon Photocell

Power Supply

 

1 x 9V battery

Auto Shut-off

 

After 10 minutes of non-use in measurement mode
After 1 hour of non-use in calibration mode

Environment

 

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

Dimensions

 

180 x 83 x 46 mm (7.1 x 3.3 x 1.8")

Weight

 

290 g (10 oz.)

Method

 

Standard Methods 4500-Cl G
Adaptation of USEPA 330.5 method

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