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• Safety pipet bulbs for use with serological or volumetric pipets that avoid the outdated and unsafe practice of using mouth suction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™ Rubber Pipette Filler
Designed for efficient one-handed operation. 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™ Dropper Bulb
Make dispensing easier with Fisherbrand Dropper Bulbs. These bulbs, made of natural rubber, come in two sizes for more convenience in the lab.
Fisherbrand™ Dropper Bulbs, 24 Pk, Natural
Designed for Pasteur pipettes, small pipettes and medicine droppers. Fisherbrand™ Dropper Bulbs are made of flexible latex and are easy to attach.
Fisherbrand™ Rubber Bulb-Type Safety Pipet Fillers
Tough 100% natural rubber patented pipet fillers eliminate mouth pipetting and handling of hazardous materials
Fisherbrand™ Safety Bulb Pipette Filler, Red
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, 150mL, Red
For use with large-volume pipets with 6-8mm O.D.
Fisherbrand™ Rubber Bulb, 85mL, Without Tubing, Black
Ideal for gas sampling or for pumping gas through apparatus
Bel-Art™ SP Scienceware™ Bel-Bulb™ Pipetter
Simple suction device with a soft tapered chuck and a flexible vinyl bulb
Bel-Art™ SP Scienceware™ Bel-Art™ SP Scienceware™ Bulb Pipettor
Bel-Art™ SP Scienceware™ Bulb Pipettor is an ideal aspirator for use with Westergren or Wintrobe sedimentation tubes. Allows users to keep the bulb with a reagant bottle.
Bel-Art™ SP Scienceware™ Pipet Filler
Squeeze, then release the bulb to draw fluid into the pipet
Bal Supply Double Valve Bulb
Double valve bulb for gas sampling or pumping gas through an apparatus.
Fischer Technical Company™ Multi-colored Three-Valve Natural Rubber Pipette Filler
Eliminate the need for mouth pipetting
Fisherbrand™ Rubber Bulbs, Natural
Replacement bulbs for dropping bottles, medicine droppers and small pipets.
Eisco™ Rubber Pipette Bulbs
Durable rubber pipette bulbs allow filling and dispensing of liquids within glass or plastic serological pipettes
Eisco™ Rubber Pipet Filler
Bulb-type filler for pipetting noxious solutions and microbial suspensions.
Fischer Technical Company™ Flip Style Two Valve Natural Rubber Safety Pipet Filler
Easy to use and clean.
Bal Supply Universal Pipette Pump
Universal Pipette Pump made from high quality plastic for long-lasting use.