The ‘Two-Pin’ technique increases sanitation for multiple dose vial users. They draw with the first pin, and then shoot/inject into the body with a new one. This procedure prevents any residual contaminants that may have remained on the drawing pin from being transferred into the body via the injection site. It also makes injection less painful since the drawing needle is necessarily dulled during passage through the rubber stopper atop the vial. A dulled needle increases injection pain because it doesn’t pierce the body as cleanly as an unused one. The protocol below is followed by AAS users who draw from multiple dose vials, but steps 4 - 8 are routinely disregarded by those users who draw from ampoules (also called ampules) and sachets.
Tip 5: Punctuation can enhance your search as well. Use quotes ("search term") to only include pages with the same words in the same order. But only use this if you are looking for an exact word or phrase, otherwise you may exclude helpful results. Add an asterisk (search term*) as a placeholder for any unknown or wildcard terms. For example, C*l Tunnel would give you results for Cubital Tunnel and Carpal Tunnel. Place a question mark (search term?) for single-character wildcard matching. For example, pa?ent would give you results for parent, patent, etc. You may also use the plus sign (search + word) between words for words you must have in the results.