Problem:
Question: What is the population of coliforms and generic E.coli in the following sample? you plated 150ul per plate (duplicate plates) and all dilutions were made on 9 ml 0.1% peptone water tubes. Initial weight of the sample was 10g and you added 90ml of 0.1% peoptone water and you homegenized the sample for 1 minute before you made the dilutions listed below
plated dilutions Coliforms counts generic E. coli counts
-4 325 and 288 0
-3 TNTC(too numerous to count) 0 and 1
-2 TNTC(too numerous to count) 22 and 26
Please show your work.