What piece of lab equipment should be used when transferring a test tube from the rack into a beaker of hot water?

What piece of lab equipment should be used when transferring a test tube from the rack into a beaker of hot water?            

The answer is a test tube clamp.          

These clamps are used for holding test tubes firmly in place when the tubes are hot.                                                        

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

2%? i tried finding the exact sorry if it's not 100% correct ; -;