RE: Mayer's hematoxylin and chloral hydrate
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From: | Cynthia Favara <cfavara@niaid.nih.gov> |
To: | Histonet <HistoNet@pathology.swmed.edu>, "'Phyllis Davie'" <pdavie@phenopath.com> |
Reply-To: | |
Content-Type: | text/plain |
Phyllis,
I use Harris hamatoxylin form Richard Allen at a 1:4 dilution with
distilled water in 15 second increments until desired stain is achieved. I
also found tha Mayers was to light and took to long.
Regards,
Cynthia Favara
Rocky Mountain Laboratories
903 S 4th Street
Hamilton, MT 59840
ph: 406-363-9317
FAX: 406-363-9286
e-mail: cf98d@nih.gov
> ----------
> From: Phyllis Davie[SMTP:pdavie@phenopath.com]
> Sent: Tuesday, May 02, 2000 12:40 PM
> To: Histonet
> Subject: Mayer's hematoxylin and chloral hydrate
>
> I have been having trouble with the hematoxylin counterstain for my
> immunos. It is generally weak, with poor nuclear detail. I have been
> purchasing Mayer's hematoxylin, and I have tried 4 different vendors now,
> all with the same results. My first question is; what can be causing
> this weak staining, and what can I do to fix it? (I have been
> counterstaining from 4-15 minutes, and many times, the staining--poor as
> it is--drops off markedly after just a few racks of slides)
>
> The second part of my question is this; We decided to make our own
> Mayer's hematoxylin, but the recipe we found in the AFIP Laboratory
> Methods in Histotechnology, p. 52, calls for 50g of chloral hydrate.
> Unfortunately, chloral hydrate is a class IV DEA (Drug Enforcement
> Agency) regulated substance, and no-one here has a DEA license. Can
> anyone tell me what is the purpose of the chloral hydrate in the
> hematoxylin is?
>
> Thank you
>
>
>
> Phyllis Davie
> Clinical Laboratory Supervisor
> PhenoPath Laboratories
> Seattle, WA
> pdavie@phenopath.com
> (206)374-9009 phone
> (206)374-9009 fax
>
>
>
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