Bleach does slowly degrade with time. However, if you are looking to disinfect with a concentration around 50ppm +/- you should be fine. You could analyse a sample to be sure.
If it isn't Clorox (or another brand with an EPA registration #) it is not suitable for disinfection of infectious agents. An EPA registration number is required for all disinfectants.If it is Clorox (or another company has registered theirs w EPA during the pandemic) then I would find the lot # on the bottle and call the company. They can tell you if it has expired as a disinfectant.Good luck w this!Margaret--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchasSent from my iPhoneOn Oct 25, 2021, at 5:45 PM, Patricia Leach <Patricia.Leach**At_Symbol_Here**tamuc.edu> wrote:=EF=BB=BF--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
I was wondering about using old stocks of bleach for disinfecting in bio labs. The bleach is about 2 years old and has never been opened. I am not sure if it is industrial or commercially available bleach. Any advice would be appreciated.
Environmental Health and Safety Coordinator
Emergency Management and Safety
Texas A&M University - Commerce
Mail: P.O. Box 3011, Commerce, TX 75429
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