For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass.
Metformin ER (Fortamet) Metformin ER (Fortamet) is an expensive drug used to treat type II diabetes. It helps control blood sugar in combination with diet and exercise. This drug is slightly less popular than comparable drugs. It is available in brand and generic versions.
TBST (or TTBS) is mixture of Tris-Buffered Saline and Tween 20. It is a buffer used for washing nitrocellulose membrane in western blotting and microtiter plate wells in ELISA assays.he simplest way to prepare a TBS-Tween solution is to use TBS-T tablets. They are formulated to give a ready to use TBST solution upon dissolution in 500 ml of deionized water.