So, to answer the (I think?) question Jay Ice may have in mind, a standard medicine dropper is supposed to deliver drops - of water, other materials and solutions will vary - of between 45 and 55 mg in weight. If you accept the common statement that "a pint's a pound" then a cup at eight ounces is 228.25 grams or 228250 mg which comes out to about 4571 drops. Just for ducks I measured 206 drops in 10 mls of water for a figure of 4702 drops per cup.

At 01:32 PM 5/30/03 -0400, you wrote:

Jay Ice wrote:

> IN a cup of water does a drop make up a million parts or an ounce make up a
> million parts? I don't need an exact number like 2.354668795677785689 parts
> of a drop makes up 1 million parts. JUst a rough idea is all.
>

It would be exactly one millionth of a cup. That is what part per million means.

An ounce would be 1/8 cup and would therefore be 125,000 ppm if added to
something to make a full cup..

Marshall


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