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Some of my various dry nutrients have been exposed to humid (70-90% RH) air and as a result I'm worried that some of them may be deliquescent enough to have absorbed water. The CaNO3 gave me the first clue -- leave a pellet of it out in front of a swamp cooler and there will be a droplet in its place later. As I weigh out these salts to use them, any additional water content will throw off my measurements and elemental ppms in solution.
So, farmers, a few questions for you:
So, farmers, a few questions for you:
- Which salts do I need to worry about? Aside from CaNO3 that is.
- Can I easily purge excess water in an oven? Suggested temperature/times?
- I've been to a few stores looking at plastic totes in the 3-5 gallon range - none seem to have an air-tight seal. Do any specific products come to mind for this purpose?