原文由 poorlittle(poorlittle) 发表:
The following is quoted from https://www.edqm.eu/en/page_630.php?rubrique=400 for your reference:
Question-
In Ph. Eur. section 2.6.12 under 4-4 GROWTH PROMOTION OF THE MEDIA. There is a statement that reads ''''''''For solid media, growth obtained must not differ by a factor greater than 2 from the calculated value for a standardised inoculum''''''''. Does the statement mean that the difference can be twice the calculated value of inoculum, or half the calculated value of inoculum?
也就是说这里的factor既有减少1/2,也有增加2倍的意思,如果回收率规定为100%,则测试结果在50%(100%/2)~200%(100%×2)之间就是合格的了.