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How to Launder Lab Coats Without Compromising Cleanliness
Cleanroom lab coats are only effective if they stay clean—and laundering them the wrong way can ruin their protective properties. Washing them with regular clothes, using harsh detergents, or skipping key steps can introduce contaminants, damage the fabric, or reduce their ability to trap particles. Proper laundering ensures that cleanroom lab coats remain low-linting, antistatic (if applicable), and compliant with cleanroom standards. Let’s walk through the critical steps: using cleanroom-specific detergents, washing them separately, and using high-temperature sterilization.
Regular laundry detergents are designed to remove dirt and stains from everyday clothes, but they often contain fragrances, dyes, or additives that leave residue on fabric. This residue is a major problem for cleanroom lab coats: it can attract particles, break down the fabric’s low-linting properties, or even contaminate cleanroom environments when the coat is worn. Cleanroom-specific detergents are formulated to avoid this—they’re fragrance-free, dye-free, and leave no residue.
These detergents are also mild enough to preserve the coat’s specialized features, like antistatic treatments or stain-resistant coatings. For example, a cleanroom lab coat with antistatic properties might lose that feature if washed with a regular detergent that contains harsh chemicals. When using a cleanroom-specific detergent, follow the dosage instructions carefully: using too much can leave residue, while using too little won’t fully remove contaminants (like skin oils or dust). Wash the coats in cold or lukewarm water (below 40°C/104°F)—hot water can shrink the fabric or damage sealed seams, which are critical for trapping particles.
Wash Cleanroom Lab Coats Separately from Regular Clothing
Mixing cleanroom lab coats with regular clothes in the wash is a surefire way to introduce contaminants. Regular clothes shed fibers, hair, and dirt—even if they look clean—and these particles will stick to the cleanroom lab coats during washing. Once the coats are contaminated, they’ll spread those particles into the cleanroom when worn, defeating their purpose.
Always wash cleanroom lab coats in a separate load. If possible, use a dedicated washing machine for cleanroom textiles—this avoids cross-contamination from regular laundry. Before loading the coats, shake them gently (in a controlled area, like a cleanroom anteroom) to remove loose particles. Turn the coats inside out to ensure the inner lining (which touches the worker’s skin) gets a thorough clean—skin oils and sweat can build up here, and if not removed, they can attract dust. Avoid overloading the washing machine: crowded coats won’t rinse properly, leading to detergent residue. A half-full load is ideal for ensuring each coat gets clean.
Use High-Temperature Sterilization to Dry Cleanroom Lab Coats
Drying cleanroom lab coats correctly is just as important as washing them. Air-drying might seem safe, but it can expose the coats to dust or microbes in the air—especially if done in a non-clean area. High-temperature sterilization (like using a cleanroom-compatible dryer on a high-heat setting) kills any remaining microbes and ensures the coats are fully dry (moisture can promote mold growth, which is a contamination risk).
Set the dryer to a temperature between 60°C/140°F and 80°C/176°F—this is hot enough to sterilize the coats without damaging the fabric. Avoid using dryer sheets or fabric softeners: these products leave residue that can ruin the coat’s low-linting properties. Once the coats are dry, inspect them for any signs of damage—like frayed seams or holes. If you find damage, repair the coat (using cleanroom-approved thread) or replace it. Fold the clean coats in a clean, dust-free area (like a cleanroom anteroom) and store them in sealed containers until use. This prevents them from picking up contaminants before they’re worn.
