These 150 x 89mm end-opening envelopes are made from thin, ultra-clear, non-static polypropylene—a chemically inert plastic suitable for long-term specimen storage.
They are optically clear and are closed by stapling, folding or heat sealing.
Specimens can be examined without removal from the envelope. Fragile parts, which may be broken, can be retained with specimens.
Packets of 100.