FREE Delivery

On all orders over £75, UK Mainland only

 

Call +44 (0) 1952 582 260

Don't know? Lets us help you choose

 

Finance Available

DivideBuy

<ahref="https://uk.trustpilot.com/review/www.weldingsuppliesdirect.co.uk" target="_blank">Trustpilot

Interest FREE finance is now available through DivideBuy

Business Finance now available! Call us for more information.

  • Interest FREE Finance

    We are delighted to announce that we are now offering interest FREE payment options on all orders over £150 in value. We have teamed up with market leaders DivideBuy to offer this option. Learn More
  • British made for over 50 years

    The UK's Largest Distributor The UK's Biggest Stockist Unbeatable Pricing Learn More
  • Bessey Welders Clamps

    The highest quality welding clamps from Bessey in Germany. Greats stocks and superb pricing! Learn More

Bump / Span Gas

In stock
SKU
Bump / Span Gas
£35.46 £29.55
dividebuy-logoCheck your eligibility

Fast check - won't affect your credit rating.

Bump Gas and Span Gas

Gases critical for work place safety and plant protection. These Calibration Gas Cylinder (s) come in Various sizes. Called Span Gas and Bump Gas they come in a Span Gas Bottle, Bump Test Gas Cylinder. A Span Gas Cylinder needs a Calibration Gas Regulator. All the above come as Zero Calibration Gas (an alternative name). 

What is Bump Gas ? 

A bump test is the way that verifies performance of a  gas detector and ensures that all sensors respond to their specific gas. eg a H2S sensor is exposed to H2S gas to verify it can read the results.

What is a Span Gas ?

Span gas is used for comparing different gases with given concentrations. These type of gases are known  as “span gases” or “calibration gases". Span gases are reference gases or a mixture of gases that are of a defined nature or make up.



Reactive and Non Reactive Gases

Product 

Expressed As

Shelf Life 

Tolerance

25ppm Ammonia in Nitrogen

25ppm NH3 in N2

24 months

±5%

0.9% Butane in Air

0.9% C4H10 in Air

36 months

±5%

0.75% Iso Butane in Air

0.75% Iso C4H10 in Air

36 months

±5%

0.9% Iso Butane in Air

0.9% Iso C4H10 in Air

36 months

±5%

100ppm Iso Butane in Air

100ppm Iso C4H10 in Air

36 months

±5%

50ppm Carbon Monoxide in Air

50ppm CO in Air

36 months

±5%

5ppm Chlorine in Nitrogen

5ppm Cl2 in N2

12 months

±5%

1.35% Ethylene in Air

1.35% C2H4 in Air

36 months

±5%

100ppm Ethylene Oxide in Air

100ppm C2H4O in Air

12 months

±5%

2% Hydrogen in Air 

2% H2 in Air

36 months

±5%

 

Product 

Expressed As

Shelf Life 

Tolerance

25ppm Hydrogen Sulphide in Nitrogen

25ppm H2S in N2

24 moths

±5%

2.2% Methane in Air

2.2% CH4 in Air

36 months

±5%

2.5% Methane in Air

2.5% CH4 in Air

36 months

±5%

25ppm Nitric Oxide in Nitrogen

25ppm NO in N2

24 months

±5%

10ppm Nitrogen Dioxide in Air

10ppm NO2 in Air

24 months

±5%

18.5% Oxygen in Nitrogen

18.5% O2 in N2

36 months

±5%

20.9% Oxygen in Nitrogen

20.9% O2 in N2

36 months

±5%

0.7% Pentane in Air 300 (psig)

0.7% C5H12 in Air

36 months

±5%

0.5ppm Phosphine in Nitrogen

Not available 

 

±5%

1% Propane in Air

1% C3H8 in Air

36 months

±5%

1.1% Propane in Air

1.1% C3H8 in Air

36 months

±5%

10ppm Sulphur Dioxide in Nitrogen

10ppm SO2 in N2

24 months

±5%

25ppm Hydrogen Sulphide 100ppm Carbon Monoxide 2.5% Methane 18.5% Oxygen in Nitrogen

25ppm H2S 100ppm CO 2.5% CH4, 18.5% O2 in N2

24months

±5%

 


       

Delivery

Stocks of the most commonly used mixtures are carried so you have piece of mind that you will receive your order in time. Cylinders can be shipped, couriered or flown to suit our customers needs. 

Delivery prices only apply to the mainland UK because of the nature of the contents of the goods. Contact us directly for a quotation to all other destinations.


Road – ADR

Air- IATA

Sea- IMDG

UN1956 Compressed Gas n.o.s.

Quality

All raw materials used for mixtures have traceability as part of our quality control procedure and our laboratory carries out final analysis and checks for the finished mixtures. 

 

Cylinders

Cylinder Gas Capacity (litres)

20

34

58

110

Size Dia

230mm x 78mm

270mm x 73mm

360mm x 88mm

360mm x 88mm

Weight

0.3kg

0.5kg

0.8kg

1.4kg

Material

Aluminium Alloy

Aluminium Alloy

Aluminium Alloy

Aluminium Alloy

Water Capacity

0.98 Litres

1 litre

1.72 litres

1.55 litres

Filling Pressure

175 psi (12 Bar)

500psi (34 Bar)

500psi (34 Bar)

1000psi (68 Bar)

Useable Gas

12 Litres

34 Litres

58 Litres

110 litres

Outlet

7/16" 28NS/2 ma

5/8" - 18 UNF (C10)

5/8" - 18 UNF (C10)

5/8" - 18 UNF (C10)

Bump Gas Regulator

Flammable Gas

Propane (C3H8),Methane (CH4), Butane (C4H10). (LEL or Volume mixtures).

Mixed Gases

LEL, H2S, CO, O2. 2, 3, 4 or 5 gas mixtures availaible.

Toxic Gases

CO, H2S, CI2, SO2, NH3, CO2 & many more.             

Oxygen
Volume (%)mixtures for use with oxygen meter and instrument testing.    

Attachments

Empty

Slava Yurthev Copyright