Reagent identification is made easy with the multiple-color dropper bottle lab pack. Closures are red, green, blue, white and yellow. The flexible, contact-clear LDPE bottle permits easy content identification and fluid fill volumes. NALGENE dropper bottles provide accurate, reliable, repeatable dispensing of various reagents and are an excellent alternative to pipetting and other dispensing devices. Excellent chemical resistance, materials are suitable for most biotech, diagnostic, and pharmaceutical applications. Dropper control tip snaps into place for a secure fit. Drops are dispensed one at a time. Leakproof†