Pipet Bulbs
Pipet Bulbs
Flexible, variable-capacity bulbs used to create a vacuum or apply pressure to the liquid contents of serological, volumetric, or transfer pipets to collect, transfer, and dispense liquids; available in various styles and materials.
Kinds of Pipet Bulbs
• Simple suction rubber bulbs or teats for use with small Pasteur pipets or transfer pipets that operate on a simple ‘suck-in and blow-out’ principle
• Larger, heavier-duty simple suction bulbs with thicker walls for larger pipets
• Safety pipet bulbs for use with serological or volumetric pipets that avoid the outdated and unsafe practice of using mouth suction
Safety pipet bulbs are typically made of silicone, natural rubber, or synthetic rubber. They have a tight-fitting nozzle into which the top end of the pipet is inserted. They may have three ‘pinch-and-release’ ball-valve openings operated in sequence to control (1) the expulsion of air from the bulb; (2) the suction of liquid into the pipet; and, (3) liquid discharge. So called ‘flip’ pipet fillers have just two operating valves to facilitate one-handed usage. Most safety bulbs are of a universal ‘one-size-fits-all’ design, and generally accommodate a range of pipet capacities from 1 mL up to 100 mL or more.
How Are pipet Bulbs Used in the Lab?
• Transfer of hazardous reagents and chemicals
• Routine and repetitive dispensing of sample aliquots
• Controlled drop-by-drop transfer of reagents or histological stains
Bulbs are generally washable for repeated use, but care must be taken to avoid ingress of aggressive fluid into the interior of the bulb which could cause contamination, damage, or malfunction.
Fisherbrand™ Dropper Bulbs, Natural
Designed for Pasteur pipettes, small pipettes and medicine droppers. Fisherbrand™ Dropper Bulbs are made of flexible latex and are easy to attach.
Fisherbrand™ Dropper Bulb
Make dispensing easier with Fisherbrand Dropper Bulbs. These bulbs, made of blue silicone come in two sizes for more convenience in the lab.
Fisherbrand™ Rubber Pipette Filler
Designed for efficient one-handed operation. Use the Rubber Pipette Filler to control air evacuation, liquid uptake, and liquid dispensing with three valves, each containing a chemical-resistant stainless steel ball.
Fisherbrand™ Silicone Bulb-Type Safety Pipet Fillers
Chemical-resistant, resilient, silicone pipet fillers with glass valves improve worker safety
Fisherbrand™ Rubber Bulb
Rubber Bulb for use with large-volume pipets with 6 to 8 mm O.D.
Fisherbrand™ Safety Bulb Pipette Filler
Fill any standard size pipet without the risk of cracking or chipping. Fisherbrand™ Safety Bulb Pipet Filler uses an ABS attachment with a silicone adapter that seals around pipets without twisting. Comes with an elastic band for convenient hanging on bottles or wrist.
Fisherbrand™ Rubber Bulb-Type Safety Pipet Fillers
Tough 100% natural rubber patented pipet fillers eliminate mouth pipetting and handling of hazardous materials
Fisherbrand™ Rubber Bulb without Tubing
Rubber Bulb without Tubing is ideal for gas sampling or for pumping gas through apparatus.
Fischer Technical Company™ Multi-colored Three-Valve Natural Rubber Pipette Filler
Eliminate the need for mouth pipetting
Bel-Art™ SP Scienceware™ Bel-Bulb™ Pipetter
Simple suction device with a soft tapered chuck and a flexible vinyl bulb
Bal Supply Double Valve Bulb
Double valve bulb for gas sampling or pumping gas through an apparatus.