Vial inserts are often used in laboratories that are working with small amounts of samples. Inserts keep the samples contained to a smaller volume and make it easier to extract the sample from the vial for analysis.
A conical flask has a wide body but a narrow neck, reducing the likelihood of spills during this essential swirling process. This is especially important when strong acids are present. The narrow neck also makes a conical flask easier to pick up, while the flat base allows it to be placed on any surface.
A volumetric flask is used when it is necessary to know both precisely and accurately the volume of the solution that is being prepared. Like volumetric pipets, volumetric flasks come in different sizes, depending on the volume of the solution being prepared.
Thickened PTFE material beaker, high temperature resistant, acid and alkali resistant, diversion nozzle, rounded bottom 50/100/150/200/250/500/1000/2000/3000ml.