TEST METHOD FOR CHLORIDES IN INDUSTRIAL WATER
BACKGROUND OF THE TEST:
Chloride ions are considered as necessary to remove or made limited for some industrial
applications such as in boilers or cooling water to avoid corrosion of the system. In line to this,
determination of chlorides in industrial water plays an important role.
Nuclotrasis offers user friendly test method with ease of handling the relevant reagents and other
equipments used in the analysis. For determination of chlorides in industrial water, this test relies
on volumetric titration between chloride ions in water sample as titrand and standard Silver
Nitrate as titrant while the required reagents are used through easy handling glassware.
REAGENTS/EQUIPMENTS/APPARATUS:
• Provided 5 mL & 10 mL marked glass vial (Item Code: 02-01)
• NUCLOTRASIS Chloride Test Indicator (Item Code: 01-07-1)
• NUCLOTRASIS Chloride Test Titrant Solution (Item Code: 01-07-2)
SAMPLE COLLECTION & PREPARATION
• Make sure to immediately analyze the sample after collection of sample.
• Ensure to collect sample in a suitable and designated bottle for a specific sample.
• Ensure to conduct this test at room temperatures.
TEST PROCEDURE:
1. We recommend selecting the sample volume in the provided glass vial (Item Code: 02-01)
based on your expected/desired range from the chart below.
Range
(mg/L as Cl-1)
Sample volume
(mL)
Multiplication Factor
0-50 or 0-100 ppm 10 10
60-100 and above 5 20
Above 200 2 50
Above 500 1 100
2. Add 2-3 drops of NUCLOTRASIS Chloride Test Indicator (Item Code: 01-07-1) and gently
mix. Yellow will appear if chloride ions are present in the sample.
3. If chloride ions are present, titrate the sample drop wise while counting number of drops of
NUCLOTRASIS Chloride Test Titrant Solution (Item Code: 01-07-2) with gentle mixing until
red bricks precipitates starts to form.
4. Note the number of drops added and multiply with multiplication factor mentioned in
above chart against selected sample volume.
5. Report chloride result as ppm of Cl-1.
REFERENCES:
1. ASTM Manual of Industrial Water, D512, Method B (2014).