ISO 14644. Zero particulates. Zero compromise.

Daily cleanroom cleaning to ISO 14644 protocols. Floors: mopped with cleanroom-grade disinfectant (rotated weekly to prevent resistance — typically quaternary ammonium, phenolic, and chlorine-based on rotation), using one-way mopping technique (mop in one direction only, no back-and-forth — back-and-forth redistributes contamination), stainless steel buckets, autoclaved mops. Surfaces: wiped with sterile wipes ( polyester, low-particulate) and cleanroom-grade disinfectant. High-touch areas: sanitised (door handles, light switches — yes, even in cleanrooms). Consumables restocked (sterile wipes, disinfectant spray, sticky roller refills).

Periodic full cleanroom deep clean. Walls: wiped wall-to-wall (with sterile wipes and cleanroom-grade disinfectant — walls are often forgotten in daily cleaning but accumulate contamination). Ceilings: wiped where accessible (HEPA filter frames, light fittings, ceiling panels — with particular care not to disturb HEPA filters). Floors: deep-scrubbed with rotary machine (cleanroom-grade machine, autoclaved pads). All surfaces: detailed. Disinfectant rotation: full rotation cycle (typically 4-6 weeks) to prevent microbial resistance. Deep clean typically weekly, monthly, or quarterly depending on cleanroom class and activity. Documentation of disinfectant rotation maintained.

Changeover cleaning between batches, shifts, or product changeovers. Pharmaceutical: full clean-down between batches (critical for preventing cross-contamination — particularly for allergens, potent compounds, or different products). Semiconductor: full clean-down between wafer lots (particulate control is critical). Medical device: clean-down between product runs. Protocols specified by your SOP — we follow them absolutely. Disinfectant rotation considered (if the previous batch used a sporicide, we may rotate to a different class for changeover). Documentation of changeover clean (for batch records). Full gowning for changeover clean (often full cleanroom gowning — we don't cut corners).

Pre-audit deep clean before MHRA, FDA, customer audit, or ISO 14644 re-certification. Full cleanroom deep clean to audit-ready standard. Every surface detailed. Every area that an auditor might inspect cleaned to the highest standard. Disinfectant rotation documented. Clean logs audited and complete. We participate in audit preparation meetings if requested. We attend audit if requested (to answer cleaning-related questions). We've helped facilities pass MHRA, FDA, ISO 14644, and customer audits — references available. Pre-audit deep clean is typically booked 1-2 weeks before audit date.

We use cleanroom-grade products throughout. Sterile, double-bagged, gamma-irradiated disinfectants (with certificate of conformity). Sterile polyester wipes (low-particulate, no shedding). Sterile mops (autoclaved, stainless steel handles). Stainless steel buckets (no plastic — plastic sheds). Cleanroom vacuum with HEPA exhaust (captured, not redistributed). No domestic products. No domestic equipment. No shortcuts. We source from specialist cleanroom suppliers (Contec, Texwipe, Micronclean — the industry standards). We can supply the products (with full documentation) or use products you supply — your choice.

Our cleanroom cleaners are specifically trained — they understand gowning (correct donning and doffing of cleanroom garments, no cosmetics, no jewellery, no shedding fabrics), contamination control (one-way wiping, sterile technique, disinfectant rotation, contact times), and the audit process (they know what an auditor will look at). They're trained in cleanroom-specific risks (chemical handling, sterile technique, bio-safety cabinet awareness). They're not general cleaners — they're cleanroom specialists. We carry £10m public liability (suitable for major industrial contracts). We're experienced working with pharmaceutical, semiconductor, biotech, medical device, and aerospace cleanrooms. References available on request.