karl.holzhauser (karl.holzhauser@metronet.de)
Tue, 18 May 1999 10:17:44 +0200
Hi to all
i have a question about chemicals. I have the possibility to order
the chemicals in a big store. Now, there are some different kinds
of each chemical, some are cheeper than the other. They are called
puriss, Analyse, purpurum... Is it neccesary, to buy the most
expensive, or is the cheeper one as good as the other for our
use.
thanx for help
Karl
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