PMK: some simple cautions

PMK once it is mixed in solution is not much more dangerous than any other B&W chemistry; certainly less dangerous than formalin fixer used in color processing. Pyrogallol is a fine dusty powder and can be toxic if breathed or ingested. If you are mixing from dry chemistry, use a dust mask and latex gloves. Don't drink the solution or splash it in your eyes. Common sense. I've used PMK for several years and have no ill effects from it. If you accidentally get some into your system you will imediatly notice its distinctive taste and will be able to take appropriate action.

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