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• Safety pipet bulbs for use with serological or volumetric pipets that avoid the outdated and unsafe practice of using mouth suction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.
Heathrow Scientific™ Rubber Pipet Filler
Control air evacuation, liquid uptake, and liquid dispensing. Heathrow Scientific™ Pipet Filler contains a chemical-resistant stainless steel ball in each of three valves for efficient one-handed operation.
Fisherbrand™ Rubber Suction Bulb
Use pipets and syringes with greater ease. Rubber Suction Bulb is made of sturdy natural rubber with a contoured shape and heavy-wall neck for increased grip. Available in a variety of capacities for use with 6 to 8 mm diameter pipets and syringes.
Heathrow Scientific™ Dropper Vial Bulb 3 mL
The silicone rubber dropper vial bulb is designed for use with Pasteur pipets, small pipets, and medicine droppers.
Heathrow Scientific Rubber Bulb, Red
Contoured shape and heavy-wall neck increase grip for easier use with pipettes and syringes
Fisherbrand™ Rubber Bulbs, Natural
Replacement Bulbs for dropping bottles, medicine droppers and small pipets.
Bel-Art™ Pipet Filler
Squeeze, then release the bulb to draw fluid into the pipet
Bal Supply Latex Pipette Bulbs
Small dropper bulbs made of natural latex.
Bal Supply Red Rubber Pipette Bulbs
Bulbs For Pipettes And Syringes
Bal Supply Universal Pipette Pump
Universal Pipette Pump made from high quality plastic for long-lasting use.
Eisco™ Rubber Pipet Filler
Rubber Pipet Filler is a bulb-type filler for pipetting noxious solutions and microbial suspensions.
Eisco™ Silicon Pipette Filler, 3 Valve
Silicon Pipette Filler is designed for pipetting noxious chemicals, microbial suspensions and other harmful and unpleasant solutions.
Fischer Technical Company™ Flip Style Two Valve Natural Rubber Safety Pipet Filler
Safety Pipet Filler is easy to use and clean.
Fischer Technical Company™ Company Safety Pipette Filler - Red
These pipette fillers work with pipettes up to 100 mL.