A tip, when squeezing a drop of stain onto the specimen with a pipet, don't do what I did, that is don't suck the specimen back into the pipet and return it to the bottle. It will contaminate the whole bottle contents, luckily I realised what I'd done before screwing the pipet back onto the bottle.
Neil.
Second tip
If staining a spore print apply the stain to the cover slip and then there is no cross contamination. If staining a specimen apply the stain to one side and then slide the material into the stain