Personal eye-protection. Automatic welding filtersBS EN 379: 2003+A1: 2009 Personal eye protection. Automatic welding filters BS EN 379 specifies requirements for automatic welding filters which switch their luminous transmittance to a lower predetermined value when a welding arc is ignited (referred to as welding filters with switchable scale numbers). It also specifies requirements for automatic welding filters which switch their luminous transmittance to a lower value, where the lower value of

IEC 60922:1989

Gas services

to a broad range of services in which many systems cooperate to provide effective and efficient service provision across a wide area

Hexachlorocyclohexane isomers α-HCH (α-BHC)

welding collars

For any or all biometric sample types as necessary

station car parks

6 References and further reading

BS 148 gives guidance on:

It may be used:

External business or technical specialists

Flowchart for surface assessment