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Get further information about material compatibility (PDF 440kb), including which material types should be used with each gas and which should be avoided, and about the physical properties of gases (PDF 266kb), such as density, boiling point and lower explosive limit. Alternatively, use the links below to find out more about:
The certification and traceability of our gas mixtures and the methods by which we generate certificates.
The stability and shelf-life of gas mixtures and pure gases and how BOC treat cylinders to extend the shelf-life of low-level reactive gas mixtures.
The accuracy and tolerances and where uncertainties arise in gas mixtures, from filling to certification, and how this is reflected in the product you receive.
The methods used to grade the different purities and grades of gases supplied by BOC.