What's the best way to mix, work and store KRST? Does one prepare and keep\nit as a working solution from the liquid (say, mix up a litre) or use it one\nshot? How long can it keep in the tray? How toxic is it just sitting in the\ntray evaporating? Some explanation about when to use what ratio would\nprobably help me too. I'm toner Agfa RC paper with it. Thx. Oh yeah, latex\ngloves are OK or do I need rubber gloves?