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.
E-mail. Fretting the guitar is the act of placing the fingers on the fretboard in such a way that the note played sounds clear and full. In short, fretting is how you put your fingers on the strings to get the guitar to sound right!The first thing to be aware of in regards to fretting is that the best spot on a fret to put your finger is the area of the fret directly behind the fret wire. That area is the sweet spot.n short, fretting is how you put your fingers on the strings to get the guitar to sound right! The first thing to be aware of in regards to fretting is that the best spot on a fret to put your finger is the area of the fret directly behind the fret wire. That area is the sweet spot.