Digital BW, The Print

> With PMK being highly toxic in dry form, is it less toxic when
> purchased in a pre-mixed liquid concentrate?

It's still toxic. The dry powder is very fine, light, and can easily become
airborne with a bit of air movement. There's a significant risk of inhaling
some of the dust. That's why it's recommended that you mix the powder in a
well ventilated area, preferrably outdoors. The premixed liquid concentrate
elimates this concern.

Jesse,

The liquid is less toxic in the sense only in the sense that it is diluted
and less likely to be inhaled. The danger in with working with the powder is
the chance of inhaling some. I do my measuring and mixing of the powder out
doors.

If you have any interest in using or working with pyro then I strongly
recommend that you don't proceed until you read the "Book of Pyro" by Gordon
Hutchings. He covers all the technical and safety issues very nicely.

You can order it for $29 directly from Gordon at:

Book of Pyro
Box 2324
Granite Bay, CA

Or from the Photographers Formulary or Bostick and Sullivan

http://www.photoformulary.com/
http://www.bostick-sullivan.com/

Martin Wesley

----- Original Message -----
From: "djmay6782" <djmay@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Monday, April 08, 2002 10:38 AM
Subject: [Digital BW] PMK Pyro toxicity (7 truths)


> With PMK being highly toxic in dry form, is it less toxic when
> purchased in a pre-mixed liquid concentrate?
>
> Jesse
>
>
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