TESTING

[stonybroke]

but then hundreds of chems test positive to any test you mention. Sorry .

 

[johnboy]

dont know about hundreds, but yes, some do... but does the same chem give a false positive to two tests, or three, or four?
multiple reagent tests get rid of this problem AFAIK.

 

[stonybroke]

its not as difficult as you might think

 

[johnboy]

are you going anywhere with this?