Polyethylene (PE) This plasticware is available in both high and low density. Both types are chemically inert plastics.
    Low density PE has good visibility and flexibility
    High density PE has lower visibility but is more rigid and less permeable.

Polymethylpentene (PMP) This transparent plastic is rigid and highly resistant to chemicals. It can also withstand repeated autoclavings.

Polystyrene (PS) This is another rigid, transparent plastic. It has high resistance to aqueous solutions but limited resistance to solvents.

Polyvinyl Chloride (PVC) This is a transparent plastic with a slight bluish tint. Although highly resistant to oils, it is permeable to most gases.

Teflon (FEP) This highly flexible plastic is resistant to all known chemicals except fluorine and molten alkali metals.

Teflon (TFE) This opaque white, flexible plastic has the lowest friction of all the plastics. It is excellent for use in stopcocks and separatory funnel plugs.

Most elementary classrooms will find that polycarbonate lab ware is sufficient for their needs.

Most middle school classrooms but will need polyethylene (PE) and polymethylpentene (PMP) lab ware.