What to look for in your E-Juice
You should make sure your e-Juices are made with 100% USP Kosher Food Grade bases. The 2 main bases should Vegetable Glycerin, and Propylene Glycol. Citric acid should not be in your e-juices.
A lot of E-Juices can cause COPD Industrail Asthma when prepared with the wrong bases in their e-juices.Many suppliers and our self have started making our E-Juices by hand. Ours we prepare spot in front of the customers also allowing to mix and match flavors or request extra flavor be added to the e-juice. Some other suppliers are sill dealing with Dekang and Hangzen E-Juice from China (they can put made in Canada because they are bottled and labelled from imported ingredients even though the juice is made in China)! Yet there are also other suppliers making their own juice but are not using USP Food Grade Kosher grade PG instead are using PG for biodiesel fuels (chemical grade), or deg (base for antifreeze).
What is PG and DEG?
PG: Industrially, propylene glycol is produced from propylene oxide (for food-grade use), and global capacity in 1990 was 900,000 tons per year. Different manufacturers use either non-catalytic high-temperature process at 200 °C (392 °F) to 220 °C (428 °F), or a catalytic method, which proceeds at 150 °C (302 °F) to 180 °C (356 °F) in the presence of ion exchange resin or a small amount of sulfuric acid or alkali.
Final products contain 20% propylene glycol, 1.5% of di-propylene glycol and small amounts of other polypropylene glycols. Further purification produces finished industrial grade or USP/JP/EP/BP grade propylene glycol that is typically 99.5% or greater. Propylene glycol can also be converted from glycerol, a biodiesel byproduct. This starting material is usually reserved for industrial use because of the noticeable odor and taste that accompany the final product.
DEG: DEG is produced by the partial hydrolysis of ethylene oxide. Depending on the conditions, varying amounts of DEG and related glycols are produced. The resulting product is two ethylene glycol molecules joined by an ether bond.
"Di-ethylene glycol is derived as a co-product with ethylene glycol and tri-ethylene glycol. The industry generally operates to maximize MEG production. Ethylene glycol is by far the largest volume of the glycol products in a variety of applications. Availability of DEG will depend on demand for derivatives of the primary product, ethylene glycol, rather than on DEG market requirements."