Desiccator lids are necessary parts to complete the drying apparatus for sensitive materials. Whether using susceptible powders, porous solids, or chemicals, the tops lock out elements that could cause premature reactions. Both ring-grooved and flat flange glass styles ensure a uniform seal. Choose standard knob desiccator lids or for accelerated drying, vacuum compatible tops with NS socket or screw thread outlet. Equally as thick-walled as bases, autoclavable tops vary in nominal size, interior diameter, and height.