There have been several comments about Efke PL25 quality problems in the current thread about demand for an ISO 25 film. I wonder, are the kinds of emulsion defects reported something that would be visible on unexposed sheets with an IR viewer? For those folks with a freezerful of the stuff (alas, not me), this might be a simple way to discard the worst sheets before going to the trouble of exposing and developing it.
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