I bought a bunch of PMK Pyro developer from B&S some time ago and didn't use as much as quickly as I thought. This is the stuff that comes as one bottle of Solution A and one bottle of Solution B. The company recommends a shelf life of 6-12 months but I wonder whether it is common practice to throw away these undiluted solutions after that time. Practically speaking, do you throw the stuff away after 6-12 months?
Thanks
Tom Keenan
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