How to wash a lab coat
Updated: 21 October 2026
The coat is already on the back of a chair, and the amazon page gave you two temperatures. How to wash a lab coat starts with the label sewn into that garment, then with a harder question: is this coat merely dirty, or is it contaminated? A clean polycotton work coat can go through a domestic wash at the highest temperature that label allows. A coat that has taken a chemical spill, a biological soil, or nanomaterial dust does not belong in the machine next to your towels. The [Lab coat comparison](/hub/occupational-safety/lab-coat) is where the listings sit, including the Portwest 2852 care clash. Peter F. used the captured amazon care lines, the Portwest datasheet, HSE laboratory guidance, and NHS laundry notes, dated 19 October 2026. We did not launder a sample. A qualifying purchase can earn a commission at no extra cost to you.
The coat is already on the back of a chair, and the amazon page gave you two temperatures.
The coat is already on the back of a chair, and the amazon page gave you two temperatures. How to wash a lab coat starts with the label sewn into that garment, then with a harder question: is this coat merely dirty, or is it contaminated? A clean polycotton work coat can go through a domestic wash at the highest temperature that label allows. A coat that has taken a chemical spill, a biological soil, or nanomaterial dust does not belong in the machine next to your towels. The Lab coat comparison is where the listings sit, including the Portwest 2852 care clash. Peter F. used the captured amazon care lines, the Portwest datasheet, HSE laboratory guidance, and NHS laundry notes, dated 19 October 2026. We did not launder a sample. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Wash claim | Fabric claim | Build signal | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Portwest Portwest 2852 lab coat, size L | Bullets 60 °C; care line 40 °C | 65/35 polycotton, 245 g | Named workwear, 570 g | 9.2 | about £16.64 | View offer |
| Best value |  Portwest Portwest 2852 lab coat, size M | Bullets 60 °C; care line 40 °C | 65/35 polycotton, 245 g | Named workwear, 530 g | 9.0 | about £16.64 | View offer |
| Alternative |  n/a Thin-style cotton-polyester coat | n/a | Cotton polyester, thin style | See-through in many UK reviews | 4.5 | about £8.49 | View offer |
On this page
Read the label in the coat
Portwest’s GB datasheet for style 2852 says the Kingsmill coat is machine washable at 60 °C. The amazon care lines for both the size L and the size M listings in this set say 40 °C, while the bullets still say 60 °C. Workwear.co.uk’s page for the same style has used a care block that says 40 °C or below. Three official-looking sentences, one garment. You cannot average them into 50 °C.
The temperature you use is the one on the label stitched into the coat you are holding. If the label says 40 °C, a 60 °C wash is you overriding the maker of that unit. If the label says 60 °C, the amazon care line that says 40 °C is the line to ignore. The same listings say do not bleach. This clash is specific to the Portwest rows we captured. Most other coats in the set, including Lab Coat X, AUYAO, FAHAKO, and the thin-style title, do not state a wash temperature at all. Cotton in a title is not a 60 °C licence.
A home wash for a clean coat
A clean coat means dust, pen marks, or ordinary wear, with no chemical splash and no biological soil. Wash it separately from household clothes. Use the highest temperature the sewn-in label allows. Close the studs so they do not catch other cloth. Empty the pockets. A phone left in a smartphone pocket, which Yeats & Sterling advertises, is a common way to end a wash early.
NHS England’s letter of 15 April 2020 says that if uniforms are washed at home they should be washed at the highest temperature the garment allows and at least 60 °C, separate from the household wash. A ten-minute 60 °C wash is described there as enough to remove almost all micro-organisms on uniforms. That sentence is about uniforms. It is not a licence to ignore a 40 °C label, and it is not a laboratory-spill procedure. If your workplace has a laundry rule that is hotter than the label, the workplace processes the coat. Iron only if the label allows it, on a polycotton setting. If the label says line dry, the tumble dryer is the wrong tool.
When the coat must not go home
Stop the domestic how-to when the coat is contaminated. HSE’s clinical-laboratory guidance treats containment level 2 coats as soiled linen, laundered or disposed of on that basis. Containment level 3 coats are autoclaved before they are laundered or discarded. Coats come off at the door of the containment area and are not stored in personal lockers. Those cycles are a workplace system. They are not a cotton programme on a household machine.
HTM 01-04 describes 65 °C for at least ten minutes or 71 °C for at least three minutes, plus mixing time, for processed healthcare linen. Quoting 71 °C at your kitchen sink does not turn a home drum into a hospital laundry. A solvent-soaked coat is a waste decision, not a wash. HSE’s HSG272 says nanomaterial workwear should not be taken home. Phone the laboratory manager, the school technician, or the occupational-health contact your site names. Do not experiment with a longer cycle.
What washing does not fix
A hot wash does not add grams to a thin cloth, and it does not print a standard the listing never had. The thin-style coat at about £8.49 is called see-through in UK reviews. Washing it at 40 °C or 60 °C leaves it see-through. AIUNBEST’s 160 g coat does not become a 245 g Kingsmill coat in the machine. A failed Howie check is also permanent. Surrey wants a high neck and ribbed cuffs. No wash cycle sews those on.
If the coat was the wrong type on day one, replace it rather than laundering it into a new job. The buying guide is the order: rule, hazard, cloth, then size. A clean Portwest 2852 that the label allows you to wash is still general workwear. It is still the wrong coat for a bioscience practical that issued a Howie specification, and it is still a melt risk beside a Bunsen, which Nottingham states for 65/35 polycotton.
Common questions
Should I follow 40 °C or 60 °C on the Portwest listing?
Follow the label in the coat. The Portwest 2852 datasheet says 60 °C. The amazon care lines for the size L and size M rows in this set say 40 °C, and the bullets say 60 °C. Those lines disagree, so the sewn-in label is the one that belongs to the garment you have. Do not pick the hotter number because it sounds more hygienic. The listings also say do not bleach.
Can I wash a lab coat with my normal clothes?
Not if you can avoid it. For a clean work coat, wash it on its own at the highest temperature the label allows, with studs closed and pockets empty. NHS uniform advice, where it applies, also says to keep that wash separate from the household load. A contaminated coat should not be in the house at all. Ordinary shirts do not need whatever was on a laboratory cuff.
When is a home wash the wrong tool?
It is the wrong tool for a chemical spill, a biological soil, containment-level laundry, or nanomaterial dust. HSE expects containment level 3 coats to be autoclaved before laundering, and HSG272 says not to take nanomaterial workwear home. A domestic 60 °C cycle is not an autoclave. If you are unsure whether a mark is dirty or contaminated, ask the workplace and leave the coat there.
What is the difference between a 60 °C uniform wash and HTM 01-04?
The NHS uniform note describes a ten-minute 60 °C wash at home, at the highest temperature the garment allows, as a way to remove almost all micro-organisms from uniforms. HTM 01-04’s 65 °C for ten minutes or 71 °C for three minutes, plus mixing time, is for processed healthcare linen in a proper laundry. The guidance itself says the domestic uniform advice is not that cycle. Neither sentence overrides a 40 °C care label.
Do I iron a polycotton coat?
Iron it only when the care label allows ironing, on a polycotton or synthetic setting, after the coat is dry enough to press. A thicker cloth, which one Yeats & Sterling reviewer said took longer to dry, should be fully dry first. Do not use a hot linen setting on 65/35 cloth. If the label shows a crossed-out iron, leave it on a hanger.
Can I tumble-dry if the label says line dry?
No. A line-dry or drip-dry symbol means the tumble dryer is outside the care claim, even if the coat is still damp before an early start. Heat that the label excludes can shrink a polycotton or damage a finish. Give it an airer overnight. If you need a dry coat every morning, own two, which is a cheaper fix than replacing a shrunken one.
What if the coat is soaked in solvent?
Do not wash it at home and do not tumble it. A solvent soak is a workplace waste or spill procedure, not a cotton cycle. Water will not neutralise the chemical, and a 65/35 coat may already be damaged. Bag it as your site tells you to, using the gloves and tray they specify, and tell the responsible person. Replacement is a purchasing decision after that, not a wash setting.
Related pages
Sources
Public UK sources from the research digest, last checked on 21 October 2026. Shelf prices and star lines are the amazon.co.uk figures in the display file. The price bands are this set, not a market average.
- HSE: COSHH and PPE (retrieved 21 October 2026)
- HSE: clinical laboratories guidance (retrieved 21 October 2026)
- HSE: HSG272 nanomaterials (retrieved 21 October 2026)
- University of Nottingham: lab coat guidance (retrieved 21 October 2026)
- University of Surrey: Howie coat for bioscience labs (retrieved 21 October 2026)
- NHS uniforms and workwear guidance, April 2020 (retrieved 21 October 2026)
- CLEAPSS Student Safety Sheet 101 (retrieved 21 October 2026)
- Portwest 2852 datasheet (GB) (retrieved 21 October 2026)