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　　Provides safe, accurate and trouble-free pipetting with simple, one-handed operation. Pipettes fit smoothly into its flexible tapered chuck. The thumbwheel on the side is rotated for precision filling or dispensing, and the plunger may be pressed for quick emptying. It is resistant to acids and alkalis. Disassemble all parts for cleaning and before autoclaving at 121°C (250°F) for 20 minutes except the chuck which should not be autoclaved. Pumps sold individually (Glass not included).