Best Answer alpamay , 02 June 2015 - 07:43 AM
total plate count : 25-250
A. 10-2 344, 450
10-3 256, 188
188x1000=188000=19x104 passed
B. 10-2 152, 136
10-3 18, 21
152+136+18+21=327/2.2=149x100=14,90015x103 passed
C. 10-2 TNTC, TNTC
10-3 18, 21
18+21=39/2=19.5x1000=19,500=20x103 passed
D. 10-2 TNTC, TNTC
10-3 30, 55
30+55=85/2=42.5x1000=42,500=43x103 passed
E. 10-2 344, 450
10-3 256, 259
344+450=794/2=397x100=39,700=40x103 passed
F. 10-2 0, 0
10-3 0, 1
answer=<10 passed
REFERENCE: US Foods & Drug Administration. January 2001. Bacteriological Analytical Online.