Bit confused by the whole 'acceptable levels of contamination' subject with regards to lab testing. I've looked at various sampling plans and the stated acceptable levels and keep finding figures such as 103cfu/g. What I don't really get is the necessity of the indices and what it actually means. If someone has the time to explain this to me that'd be great as I'm blagging bits of my sampling plan to a certain extant at the moment.
As well as this I've had some lab results back and they state things like >3.00x105 (as a result of a tvc test). This just doesn't make a lot of sense to me as this really isn't my area of expertise.
Any help would be much appreciated.
Don’t worry, you are far from alone as demonstrated below.
Very briefly, the 2 numbers in yr post translate to 1000 cfu/gram and 300,000 (units missing, probably again cfu/gram) respectively. i hope you are familiar with.these formats.
TBH, “Indices” sounds like you are well on the way to becoming a mathematician as well as a microbiologist.
"Indices" is the plural of "index"
From a Maths POV, Index = Power = Exponent = Superscript (x) in numbers like ax , eg the "4" in the number 104
For example, in the following thread, wherever you see the words "exponent" or "power", translate as index (or indices if plural) -
I suspect you will soon be encountering "Logs" as well, so maybe this "aps" special will be of pre-emptive interest -