Gas Monitors & Solutions by OBW Technologies

Calibration Gases

Calibration Gas Mixtures

OBW Technologies can supply custom made gas and liquid mixtures for all analytical, detection and process applications in a wide range of container sizes.

Certificate of Composition

All primary and certified mixtures are issued with a certificate of composition, showing a certified shelf life. We also supply, as standard, an extra laminated certificate tied to the valve or guard for our customer’s records. We use a range of specialised internal cylinder treatments to give excellent mixture stability and optimum shelf life.


All cylinders are supplied with a weather proof body label, thermographically produced to withstand arctic sub-zero temperatures, wet tropical conditions or intense heat as found in the desert regions.

All products are traceable to the National Physical Laboratory or UKAS calibrated weights.

If analysis is required we calibrate against UKAS, NPL or NIST gas standards.

Non-Refillable Cylindersindustrial gas cylinders

Our cylinder sizes range from the small 12 litre cylinder up to the new 112 litre cylinder which is becoming extremely popular worldwide.

We can supply all corrosive toxic gases e.g NO, NO2, NH3, H2S, SO2, HCL, HCN, Cl2, PH3 and SiH4as well as commonly monitored components and the full range of LEL mixtures and common gases.


High Purity Gases

OBW supply a large range of high purity carrier gases from Acetylene to Xenon with purities up to >99.9999%.

These include:gas cylinders

  • Carrier Gases
  • Hydrocarbon Gases
  • Chemical Gases
  • Halocarbons
  • Rare Gases
  • Research Gases




We also can supply a complete range of equipment including:

  • Fixed Flow Regulators–FF100
  • On-Demand Flow Regulators–ODFR
  • Variflow Regulators–VF
  • Push Button Regulators–PBR

OBW also supply a range of carry cases to keep all gases, tubing and control equipment safely together.