Dust class
HSE 'Controlling exposure to stone dust' (published by TSO 2022 ISBN 978 0 7176 6736 9) states: 'A British standard defines the dust classes for industrial vacuum cleaners as L (low), M (medium) and H (high). The higher dust class vacuums have additional features that make them suitable for more toxic substances.'
[edit] Related articles on Designing Buildings
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