CL3 Laboratory

The Brief

Stancold was appointed by a cleanroom contractor partner to specify, design and construct a CL3 laboratory for an Oxford-based biotechnology company manufacturing immune system medicines. Containment sat at the centre of the scope, and the contractor needed confidence that the envelope would perform before it reached validation.

Our Approach

At CL3, containment is decided by detail. Every junction, penetration and interface was checked against the specification before the scope was agreed.

The main project challenges included an intricate design layout that drove several amendments to our scope while achieving an airtight envelope in a facility operating under negative pressure.

We accommodated those amendments as the design settled, then our project manager attended site for a full survey to confirm construction detail ahead of installation.

Delivery in Action

Stancold installed the high-specification Puracore cleanroom system, complete with a flush vision panel and semi-flush clamp frame door.

To hold negative pressure, a vinyl weld was combined with a uPVC white food-safe laminate panel finish, sealing the 300m² envelope throughout.

The laboratory was completed in three weeks and handed over with the containment specification met in full – a package the contractor could close out to programme, and further evidence of our understanding of critical environments.