PR> Sorry, litmus paper only has one color shift, turning either pink or
 PR> blue--just like hydrangeas!  There is a "universal" test paper that
 PR> is a combination of different indicators normally yellow and can give
 PR> a general indication over a range, but it isn't very accurate.
 VF> Try getting an aquarium water-tester - which will be nothing more than
 VF> Bromothymol Blue, a tube, and a color strip. However, when used
 VF> properly, such a kit is damnedly accurate. 
Litmus is quite accurate if it is carefully used and you have experience
knowing how to recognize the inflection point.  As are all the other pH
indicators, methylene blue, methyl red, etc.  But each has only one
particular pH point at which they change.  The inaccuracy I was speaking
of is from the wide range universal paper, the golden paper which gives
you a rainbow color effect to detect pH ranges from very acid to very
alkaline.
... This ì”ì tag ì”ì line has ì”ì a lot of ì”ì bugs in it
--- Blue Wave v2.12 [NR]
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