PELD. White PP closure and PELD control dispensing tip. Excellent chemical resistance; materials are suitable for most biotech, diagnostic and pharmaceutical applications. The flexible, contact-clear dropper bottle permits easy content identification. Available in three convenient sizes. Dropper control tip snaps into place for a secure fit. Drops are dispensed one at a time. Leakproof. PELD. White PP closure and PELD control dispensing tip. Excellent chemical resistance; materials are suitable for most biotech, diagnostic and pharmaceutical applications. The flexible, contact-clear dropper bottle permits easy content identification. Available in three convenient sizes. Dropper control tip snaps into place for a secure fit. Drops are dispensed one at a time. Leakproof.