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Check the tariff classification for a heat and moisture exchanging filter.
T29 exemption allows farmers, landscapers and other land managers to treat non-hazardous pesticide washings produced during their work.
This study aims to find out if air filters can reduce winter respiratory infections (including COVID-19) in care home residents.
T33 exemption allows you to filter central heating oil from disused tanks so that it can be reused.
Find out about eligibility and requirements for the silt filtration dams or seepage barriers item.
What local authorities must do to grant recognition for natural mineral water and carry out ongoing checks.
How to approach sampling ambient air and the sampling and analytical techniques to use.
How bottled water producers can get a natural mineral water recognised in England, and rules you need to follow to produce and label it.
Guidance on the ventilation of indoor spaces to reduce the spread of respiratory infections, including coronavirus (COVID-19).
Formerly part of M18, technical guidance for industrial plant operators (and their contractors) who monitor effluent discharges to water and sewer.
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