TABLE 3.

Inoculum plate counts and numbers of positive (YF) reactions for a marine coculture inoculated in the Colilert-18 system at various inoculum concentrations and in several seawater dilutions

Result for seawater at indicated dilution
Undiluted1:51:101:20
Positive (YF) wellsbPositive (YF) wellsPositive (YF) wellsPositive (YF) wells
Inoculum dilutionInoculum plate count (CFU ml−1)aLSInoculum plate count (CFU ml−1)LSInoculum plate count (CFU ml−1)LSInoculum plate count (CFU ml−1)LS
10−5TNTC4948TNTC4948TNTC4948TNTC4948
10−631249483494948297494817100
10−72949484549463349182400
10−844948748954843201
10−924600381100000
  • a TNTC, too numerous to count.

  • b Number of YF Colilert wells per test. L, large wells (1.6 ml); S, small wells (120 μl).