I concur with the others. For about 6 years I've made it from powder but the toxicity risk bothered me until I realized how safely and cheaply you can just buy the same stuff. We get a discount through our stockroom on a 4L bottle of 10% Buffered Formalin from Fisher (SF100-4) for $28.

I started getting neutral buffered formalin instead from Fisher.

--On Monday, March 21, 2011 11:25 AM -0500 Montina Van Meter <montina.vanme...@pbrc.edu> wrote:

Nick,

I too have tried to limit my exposure after making it from scratch for
30+ years.  I currently purchase it from USB Corp. located in Cleveland
Ohio. They have been acquired by Affymetrix and you will be directed to
that website when you type in www.usbweb.com.

Cat.# 19943 1LT   Paraformaldehyde Solution, 4% in PBS, 1L  $48.00


Regards,
Tina





Montina J. Van Meter
Lab Manager
Autonomic Neuroscience
225-763-2564
vanme...@pbrc.edu




-----Original Message-----
From: histonet-boun...@lists.utsouthwestern.edu
[mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Madary,
Joseph
Sent: Monday, March 21, 2011 10:27 AM
To: histonet@lists.utsouthwestern.edu
Subject: [Histonet] PFA preparation

Anyone have a decent method to prepare paraformaldehyde.  I have the
powder and the NOAH, hood, heat source but forgot the method.


Nick Madary, HT/HTL(ASCP)QIHC

Histology Mgr, Medimmune

301.398.6360(lab), 4745(vm),9745(fax)


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