Electronic interlocks provide audio/visual alerts when doors are left open, prevent accidental damage from forced opening, enable BMS integration, and support access control with user data logging.

Use fully-welded stainless steel construction with continuous seam welds and smooth radius corners. This eliminates hard-to-clean cracks and crevices where contaminants can accumulate.

Inspect EPDM or silicone gaskets for 250% compression when door closed. Replace if hardened, cracked, or loss of elasticity. Clean with 70% alcohol; avoid chlorine or strong acid cleaners that cause corrosion.

Follow "clean first, then disinfect" - remove outer packaging, wipe with 70% isopropyl alcohol or 0.5% peracetic acid, place with spacing between items, and expose to UV for minimum 15 minutes (30 minutes recommended).

Yes. USP 797 requires surface sampling of all classified areas including pass-through chambers. Category 1/2 CSPs require monthly sampling; Category 3 requires weekly sampling and batch-end sampling.

Assign the ISO classification of the cleaner connected space. For example, if a pass-through connects ISO 8 to ISO 7, classify it as ISO 7. Industry best practice follows the higher standard of the two connected areas.

 The interlock (mechanical or electronic) allows only one door to open at a time. When one door opens, the opposite door automatically locks, creating an airlock that prevents cross-contamination and maintains room pressure differentials.

A pass-through chamber is an enclosure installed in a cleanroom wall to facilitate material transfer between areas while minimizing contamination risk. It reduces foot traffic, maintains differential pressure, and prevents unfiltered air exchange through interlocked doors.

Check air velocity regularly using anemometer (must remain ≥20 m/s). Replace pre-filters and HEPA filters based on differential pressure gauge readings or scheduled maintenance plan. Clean interior walls monthly with lint-free cloth

Strictly adhere to maximum occupancy (usually 1-2 people). Crowding disrupts indoor airflow and leads to incomplete purification. Allow intervals between groups for self-purification

Change into dedicated lint-free cleanroom clothing, ensure hair is completely covered by cap, remove all jewelry, avoid makeup and perfume that shed particles. Street clothes are significant contamination sources.

Standing still creates purification "dead spots" where airflow cannot reach areas like back, underarms, and knees. Active rotation (at least one full turn) with arm movements ensures complete surface exposure.

Opening both doors bypasses the airlock function, allowing unfiltered non-clean air to flow directly into the clean area, completely destroying pressure differential and compromising cleanliness classification

Enter, close outer door completely, stand in center, slowly rotate 360 degrees with arms raised for thorough coverage, wait for preset time (15-30 seconds), then open inner door and enter clean area

Install between changing rooms and clean areas, or between ISO 8/ISO 7 classified areas and unclean areas. Personnel pass through after changing into cleanroom clothing but before entering the controlled environment.

Turn on and run for 20 minutes minimum before use to establish proper airflow patterns and achieve required cleanliness levels.

The working area operates under negative pressure relative to background area. Static cleanliness equals background area cleanliness. Close exhaust port to create positive pressure for achieving Class A static cleanliness.

Semiconductor production lines (particle-sensitive), biomedical research labs, pharmaceutical manufacturing, and any controlled environment requiring precise airflow, velocity, and noise level control.

An FFU is a modular air purification device combining a fan with HEPA or ULPA filters in a single housing. It provides localized clean air supply and is fundamental to cleanroom contamination control.

 Isolators install in Grade D/C space (not Grade B), reducing air exchange requirements by factor of 100. Easier cleaning of stainless steel surfaces. Reduced classified space forces efficient resource use.

Operators are the major contamination source. Isolators eliminate operator-product contact. External materials are decontaminated with hydrogen peroxide (log-6 SAL). HEPA-filtered laminar airflow maintains aseptic conditions.

Equipped with HEPA/ULPA filters removing particles ≥0.3μm, achieving ISO Class 5 (Class 100) or higher with consistent laminar airflow and stable particle control.

A modular cleanroom system providing high-level clean environment within specific working area. Combines flexibility, cost-efficiency, and easy installation - ideal alternative to traditional cleanrooms requiring local cleanliness.