NEXT WORKING DAY DELIVERY when you order before 2pm


SKU: GAS221L Categories: ,

GAS221L Chloride Ion Gastec Soluble Ion Tubes 25 – 100ppm mg/L

ex. VAT
inc. VAT
Preferred Communication Method
This field is for validation purposes and should be left unchanged.
SKU: GAS221L Categories: ,


GAS221L 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 25 to 1000 mg/l
Sampling Time 3 minutes
Detecting Limit 1 mg/l
Colour Change Brown to White
Reaction Principle 2Cl + Ag2CrO4 (Brown)           2AgCl (White)
Coefficient of Variation 15% (for 25 to 300 mg/l), 10% (for 300 to 1000 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 1 mg/l Plus error White discoloration
Br 10 mg/l Plus error White discoloration
SCN 30 mg/l Plus error White discoloration
Fe2+ 200 mg/l Minus error No discoloration (1000 mg/l)
Fe3+ 200 mg/l Minus error White discoloration
F 500 mg/l Minus error No discoloration (1000 mg/l)
I 50 mg/l Plus error White discoloration
S2- 5 mg/l Plus error Blackish grey discoloration
SO42- 2000mg/l Minus error White discoloration
Calibration gas generation Sodium Chloride standard solution

Additional Information

Weight 0.1 kg
Multi Gas Tags


Talk with the Experts

Contact us - Our application specialists will identify the best gas monitoring equipment for your needs based on the information that you can provide. If you're unsure about what's important, consider booking a site survey.

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.

Share This