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Developed a testroll from the batch I made for the tutorial today, surprisingly, it does exactly what it's supposed to. Stand dev for 1h with 1:100 dilution, used 5ml. That's 50 developed rolls from the itty bitty 250ml batch, go figure.
Mainly posting this for a general chemkeeping protip:
If your dev is in a half-full bottle with a lot of air you can displace that nasty oxygen with propane from the deviously mislabelled "Compressed Air" cans used for cleaning stuff and dusting off negatives. Really prolongs the shelf-life of some developers.
