Bump Tester and Gas Calibrator



At Crowcon, we understand our customer’s requirements. We now offer a full range of bump and calibration gas with a range of accessories for all your portable and fixed gas detector testing and calibration needs.

We have gas distribution centres in the UK, mainland Europe, Singapore, UAE and North & South America, so it has never been easier to buy gas you require, ensuring your fleet of fixed and portable devices are compliant.

NEW! Make bump testing easier

Bump testing has always been a challenge for mobile users with the difficulties and cost of transporting gas and regulators. After listening to your needs, Crowcon have found a solution to make bump testing easier.

Crowcon’s Bump Gas Spray is a can that comes with a nozzle for easy testing of equipment.Simply attach the straw onto the nozzle and spray a small amount of gas into the unit’s calibration cap.

The unit will then go into alarm and show you that it is fully functional with audible and visual checks. 


  • Certificate of conformity – for peace of mind, full compliance and actual gas values are shown on the cylinder
  • All cylinders come with Certificates of Analysis as standard – if you looses your certificate, Crowcon will have full traceability so we can get a copy of the certificate, giving you peace of mind.


  • Long shelf life for reactive gases – more bump and calibrations from the cylinder before it expires, therefore cost effective and reduces waste
  • Wide range of calibration gas – the convenience of having the gas you need to calibrate or bump test your fleet

User friendly

  • Fast shipment times – you have the right gas when you need it, no down-time

Calibration Gas

Description Ni-Br regulator Stainless steel regulator
Non-reactive gases  Suitable  Suitable
H2S  Suitable  Suitable
SO2  Suitable  Suitable
NO Not recommended Suitable
NO2 Not recommended Suitable
Cl2 Not suitable Suitable
NH3 Not suitable Suitable
HCL Not suitable Suitable
PH3 Not suitable Suitable
SiH4 Not suitable Suitable
HCN Not suitable Suitable


Below is a small selection of the accessories available for the Bump & Calibration Gas.

Fixed flow regulator with on/off switch


Flow rate 0.5 LPM
Brass (Ni-Br)

Fixed Flow Regulator with on/off switch


Flow rate 1.0 LPM
Brass (Ni-Br)

Fixed Flow Regulator with on/off switch for reactive gases


Flow rate 0.5 LPM
Stainless steel

Fixed Flow Push Trigger Regulator


Flow rate 1 LPM
Brass (Ni-Br)

Demand Flow Regulator


Flow rate 1 LPM