GAS201H Total Sulphides Gastec Gas Detector Tubes 0.02 to 0.2 mg

SKU: GAS201H

Be the first to review this product

GAS201H


Next Working Day Delivery - When Ordering Gastec Tubes from a1-cbiss, we aim to deliver to your site for the next working day.


Large UK Stock Holding - 95% of our Gastec Detector Tubes are held in stock so our delivery times are quick


Gastec Price Promise - We'll better any like for like competitors' offer. Provide us with a valid quote and we will beat it.

Excl. VAT: £29.50 Incl. VAT: £35.40
Excl. VAT: £29.50 Incl. VAT: £35.40

Product Description

Details

GAS201H Sulphides Gastec Detector Tubes

1. The measured out mud and soil is put in the generation tube and 5mL of distilled water are added.
In case of muddy water, it suffices to add a small amount of distilled water (measured out in a graduated cylinder) to the gas generation tube.
Put the cap on the generation tube.

2. Both ends of the detector tube (No.201L) are broken off, and one end of the detector tube is connected to the gas generation tube and the other to the gas sampling pump
3. 18N 2 mL of sulphuric acid are added to the gas generation tube
4. Pull the handle of the gas sampling pump to draw in a sample of the generated hydrogen sulphide.
(By repeating this process several times, all sulphides become hydrogen sulphide several times repeatedly).
The scale in the detector tube is read, and the concentration of the sulphide in the sample is calculated.

Performance

Measuring Range

0.02 to 0.2 mg

Sampling Time

45 seconds per 1 pomp stroke

Detecting Limit

0.002 mg

Colour Change

White          Brown

Reaction Principle

Gus generation tube : Sulphides + H2SO4 → H2S
Detector tube : H2S + Pb(CH3COO)2 → PbS

 

Coefficient of Variation

5% (for 0.02 to 0.2 mg)

Shelf Life

3 Years

Corrections for
temperature & humidity

Unnecessary

Store the tubes at cool and dark place.

 

Possible coexisting substances and their interferences

 

Substance

Concentration

Interference

Change colour by itself

Chloride ion

-

No

No

Chromate ion

-

No

No

Carbonate ion

-

No

No

Calibration gas generation

Static gas dilution method

Reviews

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Product Downloads

View FileGAS201H Sulphides Datasheet
View FileGastec Tubes Storage Guidelines
Have an enquiry - Contact Us
You may also like...