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BS 8478:2011

$142.49

Respiratory protective devices. Breathing gases for diving and hyperbaric applications. Requirements and test methods

Published By Publication Date Number of Pages
BSI 2011 24
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This British Standard specifies requirements and test methods for the composition and purity of breathing gases, other than compressed air as specified in BS EN 12021, for use in diving and hyperbaric applications.

The standard is applicable to the following categories of breathing gas mixtures:

  1. breathing oxygen;

  2. oxygen compatible air;

  3. nitrogen depleted air;

  4. oxygen and nitrogen gas mixtures;

  5. oxygen and helium gas mixtures;

  6. oxygen, helium and nitrogen gas mixtures.

The standard also specifies requirements and test methods for the purity of helium for use in making breathing gas mixtures.

The standard is not applicable to compressed gases for medical use, or to gases for use in high altitude breathing apparatus.

NOTE The composition and purity of compressed air is specified in BS EN 12021.

PDF Catalog

PDF Pages PDF Title
9 Table 1 Composition of breathing oxygen
Table 2 Composition of oxygen compatible air
10 Table 3 Composition of nitrogen depleted air
Table 4 Composition of oxygen and nitrogen gas mixtures
11 Table 5 Composition of oxygen and helium gas mixtures
12 Table 6 Composition of oxygen, helium and nitrogen gas mixtures
Table 7 Composition of helium
16 Table 8 Infra-red absorbance bands
BS 8478:2011
$142.49