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Hydrogen chloride (HCL)
Item Item Details
(Price is for domestic US market only)
Hydrogen chloride (HCL)
Item Name:
Hydrogen chloride (HCL)
Item #:

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Hydorogen chloride HCl NO.14D



Measuring Range

1 to 100 ppm

Sampling Hours

1 to 10 hours

Detecting Limit

0.5 ppm (10 hours)

Color Change

Yellow Purple

Reaction Principle

Hydrogen chloride react with base to discolor the indicator to purple.

Coefficient of Variation 10% (for 10 to 100 ppm-hr)
Shelf Life 3 Years
Corrections for
temperature & humidity
Temperature correction is necessary
Humidity correction is
Store the tubes at cool and dark place.

Possible coexisting substances and their interferences (NOTE)




Change color by itself


1/5 times

Plus error
(Bleaches zero zone)

Bleaches zero zone

Nitric acid

1/5 times

Plus error

Produce purple stain

Hydrogen fluoride

1 time

Plus error

Produce purple stain

Other substance measurable with this detector tube

Name of Substance

Correction Factor

Measuring Range

Nitric acid
Hydrogen fluoride


0.8 to 80 ppm
2.5 to 250 ppm

Calibration gas generation Diffusion tube method

TLV-TWA TLV-STEL Explosive range
- C 5ppm -

Range 1-100

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