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Well,
at Hazcat - we do not manufacture the strips and have relied on different manufacturers over many years - so we have some experience with the various brands-
After dealing with all the brands for years and years now - we came up with a procedure to limit their use because:
W still use them - but have developed a procedure that uses reagents without a shelf life. One of the important interferences to their use is ammonia- You may be familiar with Pirahna Base solutions (3 parts ammonia/1 part hydrogen peroxide) - even though this solution contains 30% hydrogen peroxide at 25% volume - the ammonia interferes with the paper's ability to see the peroxide.
So, check it out
Here is a link to the test procedure we use to limit the reliance on test papers and remove the interferences.
https://www.dropbox.com/t/je9ywyr5Q8Yjhh8X
If you have questions give me a call
Dan Keenan
925-878-7110
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Mel -SmithCharlton
Sent: Tuesday, June 22, 2021 2:16 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Your Favorite Peroxide Test Strips??
Just want to say I would like to know everybody's thoughts on this as it is about time for me to replace mine as well.
Mel
Melissa Charlton-Smith
MS-OSH/EM, NRCC-CHO
GOMEB & Associates
Lab Safety, Chemical Hygiene & Lab Management
Consultant
304-563-6678
On Tue, Jun 22, 2021 at 4:17 PM Margaret Rakas <mrakas**At_Symbol_Here**smith.edu> wrote: