I need to remind you about the schools policy on access to the labs. Core hours (Monday to Friday 08.30-16.30) must be respected and no access outside of these hours is permitted to the chemistry rooms. Under some circumstances access to the instrument rooms is possible outside of these times but permission must be requested from myself. These rules are made clear as part of the lab induction that everyone undergoes. Failure to comply with these (and other safety rules) will ultimately result in your access being revoked. 

If anyone has any issues with this or it will interfere with your workflow then please come and discuss with me. 

Cheers,

Edward