Appeal No. 98-1012
Serial No. 08/117,342
detects the total coliforms. When enzymes from coliforms act
on the fluorogen, the coliforms fluoresce under long wave
ultraviolet light, something non-coliforms would not do.
(Specification, p. 11, lines 1-7.) E. coli, which is also a
coliform, would exhibit a similar fluorescence.
(Specification, p. 11, lines 11-13.) Aside from the detectors
and a buffer, the medium additionally comprises one or more
agents that
encourage the growth of E. coli and coliform bacteria;
suppress the growth of Gram-positive bacteria; and,
suppress the growth of non-coliform bacteria.
The effect is a suppression of the growth of Gram-positive
bacteria and all Gram-negative bacteria except E. coli and
non-coliform bacteria, which, while the growth of other
bacteria is
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