1. (General Engineering) tungsten-electrode inert gas welding: a method of welding in which the arc is maintained by a tungsten electrode and shielded from the access of air by an inert gas. Compare MIG welding.
A prescription for a controlled drug is valid for 28 days from the date given on the prescription. usually six months unless it's a controlled i.e. morphine, pethidine and methadone. These medicines are often misused, so have stricter legal controls on their supply to prevent them being obtained illegally. A prescription for a controlled drug is valid for 28 days from the date given on the prescription.
How long is a written prescription in Utah good for in Utah? It depends on what the doctor wrote on the prescription, a valid until date is almost always included. For controlled substances like strong pain medications it will only be â¦ good for a short time until the doctor suspects the pain will go away. Other prescription medications they may be good for up to a year, but the doctor will limit the number of pills you may get each month, you cannot get a years supply up front. gb. Plan