Pipettes and it's types. Pipettes. These are used to transfer a known volume of liquid from one container to another. They are designed either to contain (TC) a specific volume of liquid or to deliver (TD) a specified volume.
1 Frock (especially in the phrase short frock) is also a child's dress or light overdress. 2  A frock is a dense knitted overgarment worn by sailors and fishermen, as guernsey frock, jersey frock (now usually simply guernsey and jersey). 3  The name oil frock has been used for a type of sailor's oilskin.
Frocking ceremony on board USS Peleliu. Frocking is a U.S. military term for a commissioned or non-commissioned officer selected for promotion wearing the insignia of the higher grade before the official date of promotion (the date of rank). An officer or NCO who has been selected for promotion may be authorized to frock to the next grade.