Poll: Laundry - scientific data required

What temperature do you wash towels at?

  • 30°

    Votes: 37 19.4%
  • 40°

    Votes: 79 41.4%
  • 50°

    Votes: 3 1.6%
  • 60°

    Votes: 60 31.4%
  • Other - specify

    Votes: 12 6.3%

  • Total voters
    191
Microbiologist.
But 30c is always going to be worse than 40. It’s just some market fluff to sound green that compromises the activity of a detergent. Prob not an issue for hardly worn stuff but Im not washing towels at 30
 
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But 30c is always going to be worse than 40. It’s just some market fluff to sound green that compromises the activity of a detergent. Prob not an issue for hardly worn stuff but Im not washing towels at 30
Laundry sanitizer apparently otherwise wash at 60c


also
 
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agh .. the new laundry sanitizer market following on on coat tails of multi-surface disinfectants to keep you family safe (double tap with killing covid certification)
 
agh .. the new laundry sanitizer market following on on coat tails of multi-surface disinfectants to keep you family safe (double tap with killing covid certification)
It’s incredible the amount of stuff we are supposed to put into each wash these days; detergent, softener, sanitiser, in-wash scent boosters. Before long there’ll be no space in the machine for the actual clothes.

Ive no idea how anyone stayed alive just using detergent.

My understanding regarding short washes is that they should only be used from time-to-time because they don’t wash for long enough to dissolve and wash away all of the detergent which builds up inside the machine. I’m not sure how effective a single hot wash is after using nothing but short washes.
 
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It seems to me a bit weird to be more worried about bedding and towels than the clothes that you wear directly against your skin all day. If it's good enough for clothes, why isn't it good enough for towels and bedding?

You'll certainly kill more bacteria at 60 than at 30 or 40, and more still at 95, but no washing machine will kill all the bacteria in the clothes unless you're soaking them in bleach. In the lab we use 121 degrees or even 135 degrees to fully sterilise stuff. The question you need to be asking is whether it matters. Detergents will kill a good proportion of the bacteria present and wash a good proportion of those left away, and the bacteria that are present nearly all came off your skin in the first place so even if they are there so all you're doing is putting the same bacteria back again.

A bigger worry is the growth of bacterial biofilms and mould in your washing machine if it isn't getting cleansed with a really hot wash on a regular basis.
 
30 for everything, with Dettol Laundry Cleanser in every wash

scientific data - not dead :p
It seems to me a bit weird to be more worried about bedding and towels than the clothes that you wear directly against your skin all day. If it's good enough for clothes, why isn't it good enough for towels and bedding?

You'll certainly kill more bacteria at 60 than at 30 or 40, and more still at 95, but no washing machine will kill all the bacteria in the clothes unless you're soaking them in bleach. In the lab we use 121 degrees or even 135 degrees to fully sterilise stuff. The question you need to be asking is whether it matters. Detergents will kill a good proportion of the bacteria present and wash a good proportion of those left away, and the bacteria that are present nearly all came off your skin in the first place so even if they are there so all you're doing is putting the same bacteria back again.

A bigger worry is the growth of bacterial biofilms and mould in your washing machine if it isn't getting cleansed with a really hot wash on a regular basis.
Do you change your bed and towel everyday ?
 
But 30c is always going to be worse than 40. It’s just some market fluff to sound green that compromises the activity of a detergent. Prob not an issue for hardly worn stuff but Im not washing towels at 30

40C won’t do anything more than 30C. If your that bothered buy an autoclave.
 
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60c wash keeps the black sludge away that builds up around the rubber seal.

Another trick I learned this week is if your steam iron stops steaming, put one part lemon juice to three part water in it. It blasts all the scale through.

Oh and another thing I learned this week. Don't put powder tablets in the washing machine with your Mrs favourite black jeans. It leaves white marks and you get a right rollicking for it.
 
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As it happens, I have just done some infection prevention and control training and there was a link to NHS England work uniform guidance and it states the following:

Scientific observations and tests, literature reviews and expert opinion as stated in
the 2007 suggests that:
• there is little effective difference between domestic and commercial
laundering in terms of removing micro-organisms from uniforms and
workwear
• washing with detergents at 30ºC will remove most Gram-positive micro-
organisms, including methicillin-resistant Staphylococcus aureus (MRSA)
• a ten minute wash at 60ºC is sufficient to remove almost all micro-
organisms. In tests, only 0.1% of any Clostridioides difficile spores remained.
Microbiologists carrying out the research advise that this level of
contamination on uniforms and workwear is not a cause for concern.
 
just spray them with virusol... it's the only way to be sure **

after foolishly using my oculus rift at the same time as having a break out of eczema on my face which had got infected I used virusol on it to good effect

** I am not a doctor or any kind of health professional ;)
 
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just spray them with virusol... it's the only way to be sure **

after foolishly using my oculus rift at the same time as having a break out of eczema on my face which had got infected I used virusol on it to good effect

** I am not a doctor or any kind of health professional ;)
Using virusol on your face? :D :p
 
• a ten minute wash at 60ºC is sufficient to remove almost all micro-
organisms. In tests, only 0.1% of any Clostridioides difficile spores remained.
Microbiologists carrying out the research advise that this level of
contamination on uniforms and workwear is not a cause for concern.
This is why some machine have towels and bedding cycles, to maintain the heat for a set amount of time, rather than just heat up to the set temperature, turn off the heater and continue the wash cycle with no additional heat.
 
Having read the technical data on my washing machine, it would appear that the “eco” bit mainly applies to the amount of water used.
yup eco is usually for water
dishwashers with eco often keep old water in the bottom and use it for the first rinse off, then change, without eco it gets changed twice
ours use 12L on normal but only 6L on eco. tbh both are very frugal on water compared to handwashing and rinsing, amazed me how little they use

washing machines are likely similar, longer cycle as less water etc
 
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