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favorite freeze preciptation container

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I use a long thin flexible non-serated steak knife. I most of the issue when you get down to the left overs is static electricity and the clinging of the spice to the sides. Once scraped I just re-use the jars and freeze again. I bought a case of those smaller half pint jars are my Acme suppermarket for like $10 which is cheaper than I have found on the net.
 
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I use commercial sauce jars :) Some aren't as air-tight as others so I always use pressure tests by filling with water and heating then shaking. If it doesn't leak then it's all good.

I've also stopped scraping out jars and started washing them out with acetone which I store collectively and carefully until all pulls are done, then add a little naphtha and let it all evap slowly for easily gatherable crystals.

I got sick of squashing crystals into an uncollectable mush, but there is a greater risk of oxidation this way.
 
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Fiashly said:
What do you use for freeze precipitations? Obviously glass is best, thick glass seems to work better than thin glass because it holds the cold while you pour off the solvent without getting overly-heated by your hands. Something with a cover too.

I have found some glasses that would be ideal in terms of shape but they don't have lids. I have heard it suggested that you should pour off the solvent and then pop the container back in the freezer upside down for an hour or two to dry out the crystals but if you just used plastic wrap as your lid that isn't really a possibility.

I have used drinking or measuring glasses with improvised lids (where I did not turn it upside down in the freezer for the final drying, I left it out and it melted and then I evaped it, which was not ideal) and I have used small pyrex baking dishes with lids (that I did leave upside down in the freezer to finish drying) that worked out better.

So what do you use?
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I sometimes use my glass measuring cup cuz the mouth is nice and wide... and it has a spout to pour out naphtha (not that it makes much difference). you say you can't put it back in freezer upside down cuz you don't have a lid. I just put paper towels down under the overturned measuring cup and leave it in the fridge a few hours and the naphtha gets absorbed into the paper towel leaving no stinky solvent smell behind.

I do however have the best freezer ever, as it has 6 different drawers. 4 have food in them and 2 are empty. So even if i get naphtha all over the place, i don't get it all over my food :)
 
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