Taylor CYA Dispenser Bottle 9191 darkening

[C3Cl3N3O3]

I bought my K-2006 in 2014 and it's been great. I did notice maybe a year or two ago that my 9191 dispenser bottle got dark. It happened suddenly and made it difficult to use. I always rinse it out as far as I recall and never use it for anything other than the CYA test. Maybe I forgot to rinse one time?

It's not a big deal as they are inexpensive to replace, I was just curious what that was all about.

 

[IceShadow]

I’d brush it out and see if it clears up. Realistically all the bottle is, is a way to mix 50/50 with the reagent, and squirt it into the test tube. It’s pretty replaceable with anything.