Thanks for the update.
How is the vapor production compared to straight PG and VG?
How is the vapor production compared to straight PG and VG?
the 99.5% stuff is fine. the other .5% is water, not "contaminants", which will only be present in trace amounts in anything USP. I'm no expert... though I've been reading A LOT the past few weeks... but the PG/VG I just picked up from MyFreedomSmokes says "pharmaceutical grade" on it.Looks like this is going to be harder than I thought. Gathering ingredients, I mean. What is the lowest suitable percentage of VG that should be used? I found a local pharmacy that sells it in 99.5% purity. I guess the other .5% is contaminants. But would that level of purity be safe?
the 99.5% stuff is fine. the other .5% is water, not "contaminants", which will only be present in trace amounts in anything USP. I'm no expert... though I've been reading A LOT the past few weeks... but the PG/VG I just picked up from MyFreedomSmokes says "pharmaceutical grade" on it.
did they list what the chemical composition was for the Dow VG?.
As a starting point to tracking down the best VG to use. I think this is where one should start no ?.
And just because dow says its safe. Im not biting.
Everything I have read about Synthetic VG says its risky. Much rather trust stuff that humans have been using for thousands of years i.e. plant based.
Extract form an article I'm reading.
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Synthetic glycerin has received some publicity as being a potential health hazard, and many consumers prefer to avoid it. It is typically produced from the starting material epichlorohydrin, which is a toxic chemical that is classified as a probable carcinogen. Of concern is the presence of trace remnants of epichlorohydrin or another potentially carcinogenic contaminant such as 1,4 dioxane. So, while synthetic glycerin provides the same benefits to your hair as glycerin derived naturally, there may be sufficient risks associated with it to warrant choosing only vegetable or animal-derived glycerin.
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Just one example. And he is talking about using it on hair. Not even inhaling.
Need to study the subject some more.
I like those towns where they won't give walmart the necessary building permits, cause it changes the town and kills all the small businesses.
Racehorse;11780532Can go either way. My little town of 5 said:You spin your wheels when disagreeing with those who think government control is the answer, the mind is dying and its life support is decision by government.
What does the USP mean?
The abbreviation USP stands for United States Pharmacopeia, a document first published in 1820 by the Medical Society of New York State. Recognized as official by Congress in 1848, this document was used as a standard reference by physicians for prescribing medicines.
Today, the USP includes chemical descriptions, identifying tests, and purity tests, primarily for active ingredients. All materials listed in the USP are considered drugs by law and subject to all the U.S. Food & Drug Administration requirements pertaining to drugs. Labeling a product or a substance as USP implies that it conforms to all the legal requirements of the FDA and that it was produced in accordance with the principles outlined in FDAs Good Manufacturing Practices (GMP).
What differentiates USP and food-grade glycerin from technical grade glycerin?
Glycerin USP is closely regulated by the FDA in all aspects of manufacturing, testing, inspection, distribution, and warehousing. Glycerin USP is subject to FDA rules requiring registration and listing, and glycerin FCC as well as USP are also subject to Good Manufacturing Practices, a series of appropriate procedures prescribed by FDA, while the technical grade is not under such regulatory control.FDA requires all domestic owners or operators of all establishments that manufacture or process glycerin USP to register and list, unless specifically exempted(21CFR §207.20). For glycerin USP of foreign origin, the foreign manufacturer and the importer share the responsibility of FDA compliance (21CFR§207.4). The Agencys definition of "manufacturer" includes the original producer as well as re-packagers and/or distributors(21CFR§207.4). Additional information on drug registration and listing instructions is available from FDA at http:/www.fda.gov/cder/drls/introduc.htm#top. Further, under FDA regulations, the quality and purity of USP and FCC glycerin products must be supported by systematic and complete record keeping on the part of the manufacturer. For example, every shipment of USP and FCC glycerin must be referenced to a lot number, which permits tracing back to the plant in which the product was produced. These requirements are designed to assure a level of product integrity that cannot be achieved strictly by reliance only on physical and chemical testing.
Technical grades of glycerin, on the other hand, are not subject to the same FDA regulatory oversight. Although produced by similar processes, the technical grades of glycerin do not have to comply with USP and FCC requirements or with FDA regulations. This quality grade of glycerin must conform only to the specifications and terms agreed upon in the transaction between buyer and seller.
Are you implying that, if I were to find a Certificate of Analysis for 99.7% glycerin, 99.5% glycerin, and 99% glycerin, the remaining respective 0.3%, 0.5%, and 1% would be water?