Equipment, furniture, and other working materials within the cleanroom must be carefully regulated. Any material which is fibrous (and therefore diffuses particles into the air) cannot be allowed, and materials used regularly within the room must be easy to clean. Paper and fabric chairs are usually not allowed, and masks & protective clothing are almost always worn. Into higher classifications of cleanrooms, specifically Class One cleanrooms, workers usually wear “bunny suits”, which are ultra-clean, low-particle jumpsuits. Foot coverings, hair nets and head coverings and multiple layers of gloves usually accompany bunny suits.
Since all objects within the cleanroom must be taken into consideration for cleanliness and particle diffusion, furniture and other items are often specialized specifically for cleanroom use. Waste cans, paper, cleaning supplies, gloves, garments, computers, writing utensils and more are designed for cleanroom use and help keep air particle count low. Specially designed cleanroom shoes often have perfectly smooth soles, although the soles must either be tacky or be accompanied by tacky mats within the chamber, for safety is always the highest priority.
Other cleanroom supplies might include adhesive mats, which are floor mats with varying degrees of tackiness designed to pick up particles on the floor, from feet and from workers entering and exiting the room. Adhesive mats are usually multi-layered, so the top layer can be removed and the remaining mat reused. Other mops, spill socks and pillows, mop buckets and wringers are designed specifically for low-particle release in clean rooms. Tacky rollers are slightly adhesive rollers which clean particles from smooth surfaces.