Читать книгу Analytical Food Microbiology - Ahmed E. Yousef - Страница 65

Count a chain of colonies that are not too distinctly separated as a single colony. If colonies can be distinguished, then it is not considered a spreader for counting purposes. If chains of colonies appear to originate from separate sources, count each chain as one colony. If the spreader is greater than 25% of the plate, report the results as spreaders (Spr.) rather than as a number.