Cuvettes

Acuvette is a kind of laboratory plasticware, usually a small tube of circular or square cross 

shape, closed at one end and open at the other, made of plastic made to hold samples for 

spectroscopic experiments. The best cuvettes are as clear as possible, without impurities 

that might affect a spectroscopic reading. Like a test tube, a cuvette may be open to the air 

on top or have a glass or other material to close it. Material : Polystrene