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SKU: GAS221LL Categories: ,

GAS221LL Chloride Ions Gastec Soluble Ion Tubes 10 – 200mg/L

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SKU: GAS221LL Categories: ,


GAS221LL Gastec Chloride Ion Detector Tubes

The soluble ion tube system offers a quicker, cheaper and easier alternative to using laboratory based anaylsers for measuring dissolved substances
(i.e. in solution).

To measure, simply immerse the detector tube in a sample of liquid (placed in a beaker or other container). Anyone can measure concentrations quickly, easily and accurately on site.

Measuring Range 10 to 200 mg/l
Sampling Time 3 minutes
Detecting Limit 3 mg/l
Colour Change Brown          White
Reaction Principle 2Cl + Ag2CrO4 (Brown)           2AgCl (White) + CrO42+
Coefficient of Variation 15% (for 10 to 50 mg/l), 10% (for 50 to 200 mg/l)
Shelf Life 3 Years
Corrections for
temperature & humidity
Store the tubes at cool and dark place.


Possible coexisting substances and their interferences
Substance Concentration Interference Change colour by itself
CN 10 mg/l Plus error White discoloration (1 mg/l)
Br 10 mg/l Plus error White discoloration (10 mg/l)
SCN 1 mg/l Plus error White discoloration (100 mg/l)
Fe2+ 20 mg/l Minus error No discoloration (1000 mg/l)
Fe3+ 20 mg/l Plus error White discoloration (20 mg/l)
F 1000 mg/l No error No discoloration (1000 mg/l)
I 20 mg/l Plus error Pale yellow discoloration (20 mg/l)
S2- 3 mg/l Plus error Blackish grey discoloration (3 mg/l)
SO42- 1000mg/l No error No discoloration (1000 mg/l)
Calibration gas generation Sodium Chloride standard solution

Additional Information

Weight 0.1 kg
Multi Gas Tags


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Book a site survey - Our specialists consider your process, your site conditions and work with you to understand your needs. It is the most effective means of ensuring your system is completely fit for purpose.

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