My high school chemistry teacher always said: "Do as you oughta. Add Acid
to Water".
At 08:16 AM 3/5/97 +0900, you wrote:
>I got hold of a 75% solution of phosphoric acid bottle complete with
>MSDS (friend works for chemical company, plenty of samples from
>their plant). Now I have to figure out how to use this as a
>deruster. Do I dilute it further for use as a deruster? If so to a
>how many % solution? Also, any information on precautions during the
>dilution process (like which do you pour in first, water into acid or
>vice versa etc.)
>
>Thanks for the help.
>
>
>Makoto Honjo
>Phone/Fax +81-3-3473-1848
>
>
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