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Help me clarify the test requirement of British Defense Standard 59-47 re fungus

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cmyguo3o

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Here I go again, a non-native speaker confused about phrasing in a standard. This bit from British Defense Standard 59-47 describes how fungus resistance ratings are assigned.

Extent of Growth:
1 = growth not, or hardly visible to the naked eye, but clearly visible under a microscope with a nominal magnification of 50X, on any of the three specimens.


I'm confused by the word "any" in a sentence that is neither all negative nor all positive. Do I assume correctly that rating 1 is assigned if:
1) at least on one of the 3 samples, the growth is invisible or hardly visible to the naked eye, but clearly visible under a microscope; and
2) (implicit part) on all of the samples, the growth is not more severe than that?
 
1/ Your understanding is correct.

2/ Probably. There is presumably more to this specification, so if there is more severe growth then the "Extent" becomes 2 or 3 or ...

JimB
 
Thank you JimB! This is actually a quote from another document that quotes the standard in question (which I cannot find online), so not much more context here. But 2) would be logical to me.
 
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