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Water Vapor (H2O)
Item Item Details
(Price is for domestic US market only)
Water Vapor (H2O)
Item Name:
Water Vapor (H2O)
Item #:

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Water vapor H2O NO.6


Measuring Range

0.5 to 1 mg/l

1 to 18 mg/l

18 to 32 mg/l

Number of Pump Strokes




Correction Factor



by scale

Sampling Time

1 minutes per pump stroke

Detecting Limit

0.1 mg/l (n=2)

Color Change

Yellowish Green Purple

Reaction Principle

Water vapor is absorbed by reagent to produce
alkarin to discolor the indicator to purple.

Coefficient of Variation 10% (for 1 to 6 mg/l), 5% (for 6 to 18 mg/l)
Shelf Life 3 Years
Corrections for
temperature & humidity
Temperature correction is necessary
Store the tubes at cool and dark place.

Possible coexisting substances and their interferences (NOTE)




Change color by itself

Sulfur dioxide,Hydrogen chloride


Puls error

No discoloration



Puls error

No discoloration



Puls error

No discoloration

Nitrogen dioxide,Hydrogen cyanide


Puls errorr

No discoloration

Hydrogen sulfide -

No effect

No discoloration

Calibration gas generation Vaper pressure method

TLV-TWA TLV-STEL Explosive range
- - -

Range 0.5-32mg/l

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