lazy shaman wrote:1. Is 'purified water' (labelled 'ion-exchange distillation treatment'
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the same as de-ionised water? The tek says that it is perfectly fine to use tap water, but if purified water is better I would prefer to use that. What difference, if any, would it make?
i do not think there would be any difference that isn't negligible. de-ionized water would certainly work (as would distilled, or really any relatively clean water)
lazy shaman wrote:2. Despite having been looking in every supermarket within this backward city I am yet to find glass baking/brownie trays which are ten-a-penny back home. I have opted to use two metal 'non-stick' baking trays. Now, I know this is *probably* not ideal, but is it going to pose a serious problem? I gather that the only product (if all goes smoothly) which shall be put in there is the naptha and spice mix; will the chemical used to treat the trays react with this?
i do not think chemical reaction is the issue here, but as you mentioned, scraping is.
i honestly don't think a rubber spatula (or any non-metal scraper) would cut it.
razor blades collect a lot more than you would assume.
dmt can also be fairly malleable (especially at warmer temps), making it susceptible to crushing it rather than scraping it.
if i were you, i would try and find some un-painted stainless, so you can scrape it fairly well without getting shavings of teflon and/or paint (would have to scrape pretty hard to get more than a negligible amount of stainless, and there is no need to scrape that hard at all)
lazy shaman wrote:3. I can also not find a glass measuring jug, the only option available is plastic. Will the lye react badly with this? If so, I can mark out levels onto a pint glass and use that instead.
if you are using an aliphatic, HDPE2 plastic is fine to use.
if you are using an aromatic (xylene/limonene/toluene) you need glass or stainless.
lazy shaman wrote:4. Vinegar. Not being able to find distilled white vinegar, is it OK to use 'apple vinegar'? Funnily enough I am not an expert on vinegar (beyond knowing its nae a real fish n chips unless its slathered in the stuff) and a wikipedia read has left me none the wiser. Am I using the vinegar solely for its acidic nature, or will the distilled white vinegar have different properties from the apple vinegar (besides being throat burningly strong)?
i have heard success stories using apple cider.
if you wan't to be doubly sure, you can basify some vinegar dilute, and pull that with minimal solvent.
evap it to see if you picked up any impurities from the vinegar. if not then it is probably safe to use.
EDIT:
Randomness wrote:If I was dertimined to use a new unscratched baking tray for freeze prcip what I would do is redissolve my xtals in a bit of ISO or naphtha and just pour them out from the baking tray into a glass and evaporate. Save scraping ptfe into the spice.
this is actually a really good idea. i can think of no reason that wouldn't work
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