Re: Expiration Date
EK Industries would be happy to receive stain powders which are no longer of
any use to you. You may reach us at 800 283 4244.
----- Original Message -----
From: "Lee & Peggy Wenk"
To: "DeLovino, Salvacion S." ;
Sent: Thursday, March 21, 2002 5:11 AM
Subject: Re: Expiration Date
> I'm going to respond in a slightly different track. And this is for ANYONE
> with old dyes that they are thinking about throwing out.
> PLEASE do NOT throw out the old dyes!!! Many were originally dyes for
> but some of these dyes found a use in histology, too. Unfortunately, for
> histology, when some particular shade is no longer in vogue in the fashion
> world, the manufacturing of that dye is discontinued. The problem is, we
> histology may still need it. But we don't need enough of some of these
> every year to warrant having the dye manufacturers continuing to make some
> of these dyes. (Think about it - how often DO you order Congo Red? I think
> our 25 gram bottle of dye powder will still be in use for about 25 years!
> (No - Congo red has not been discontinued. It's just an example.))
> I know that Dick Dapson, PhD, at Anatech, Ltd. is always looking for old
> dyes that are no longer being made. He analyses them, and figures out a
> to make them, so that we in histology can still have our needed supply.
> if someone needs an obscure dye, they have been calling Dick, and he looks
> through is stash to see if he can find it.
> I hope Dick doesn't mind me "talking" about him again. The Anatech phone
> number is 1-800-ANATECH.
> There might be other companies out there that are "rescuing" old dyes for
> the same use, and would also be willing to take your old dyes. If so,
> please, histology companies, let the Histonet community know.
> For the editors of state histology newsletters - Dick did write a 2 part
> article for the Michigan Society of Histotechnologists newsletter about
> disappearing of dyes from histology, and about his/Anatech's attempts to
> "rescue" dyes. If you think this might be of interest to your state
> members - contact our newsletter editor (Janet Dapson), also at
> (And no, I don't work for Anatech. Just work in the same state, and have
> known Dick for about 2 decades (does that sound better than - for 20
> Thank you for letting me try to rescue "unwanted" dyes.
> Peggy A. Wenk, HTL(ASCP)SLS
> William Beaumont Hospital
> Royal Oak, MI 48073
> ----- Original Message -----
> From: "DeLovino, Salvacion S."
> Sent: Wednesday, March 20, 2002 2:34 PM
> Subject: Expiration Date
> > Hello Histonetters:
> > What's the usual shelf life of most chemicals and dyes when the
> > expiration dates are not indicated on the container? We have a whole lot
> > old chemicals and dyes that we don't know if they're still good or not.
> > date back to the 60's! Thanks in advance.
> > Salvacion S. Delovino
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