A Healthy Working Environment For Everyone

Home Office Group Licence: MDHS Current Version

BOHS Membership benefits


BOHS Group Licence

The Faculty of Occupational Hygiene has been granted a Group Authority Licence by the Home Office which permits Members of the Faculty to possess sampling media containing 1-(2-methoxyphenyl)piperazine for the purpose of conducting the Method for Determination of Hazardous Substances (MDHS) 25 for measuring organic isocyanates in air.

A licence is necessary because 1-(2-methoxyphenyl)piperazine (‘1,2-MP’) is a Schedule 1 drug to the Misuse of Drugs Regulations 2001 under the Misuse of Drugs Act 1971. The Group Authority Licence is an alternative to occupational hygienists holding individual licences.

MDHS25 is the Health and Safety Executive’s recommended sampling and analytical method for determining exposures to organic isocyanates.

Active members of the Faculty will be permitted to operate under the licence as long as they comply with the requirements of the Standard Operating Procedure (SOP).  To access a copy of the SOP members can log in to their 'My BOHS' account to download the documents.
If you require any further information about the Licence please contact the membership team at membership@bohs.org or by calling 01332 250714.