Re: More on screens and filters


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Posted by Catherine Cartwright Jones on September 25, 2002 at 19:12:22:

In reply to: More on screens and filters posted by Lauren on September 25, 2002 at 18:46:57:

: I went to one of the sites CCJ recommended and it says a micron
: is .001mm. Maybe I'm being dense, but if we want 500 micron powder,
: wouldn't that be half a millimeter? That seems just huge to use for
: henna. Also, nobody seems to stock anything at 500 microns. They
: have stuff from 50 up to about 300. Wouldn't that be too small for
: henna?


500 micron was the sifting recommended by the investigating committee
to Agmark in India. There's stuff in many of those hennaes that's
visible to me without my glasses ... so if they're actually using 500
micron filter screens, they've used it for target practice first! I
don't know what sifting size the Fred is, nor do I know what Abid uses.

 


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