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

Sent from my iPhone

On Oct 25, 2021, at 5:45 PM, Patricia Leach <Patricia.Leach**At_Symbol_Here**tamuc.edu> wrote:

=EF=BB=BF

Hello,

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.

 

Patricia Leach

Environmental Health and Safety Coordinator

Emergency Management and Safety Texas A&M University - Commerce

P: 903.468.3278 C: 316.644.8255

Mail: P.O. Box 3011, Commerce, TX 75429

 

 

--- 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

--- 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

Previous post   |  Top of Page   |   Next post