Pipette Filler Bulb Type - Red

This red bulb-type pipette filler (often called a "propipette" or 3-way bulb) is a standard lab safety tool for drawing up and dispensing liquids without mouth contact. Natural rubber bulbs like this are popular because they're flexible, chemical-resistant and affordable for routine lab work.

Key Features

• Material: Flexible, durable red natural rubber.
• Capacity: A universal design that typically suits pipettes from 1ml to 100ml.
• Configuration: A 3-valve "pinch-and-release" system for precise control.
• Compatibility: Fits most standard glass and plastic volumetric or graduated pipettes.

The 3-Valve System (A-S-E)

Most natural rubber fillers use the standard three-valve layout for one-handed use:

• Valve A (Air): At the top. Press it while squeezing the bulb to push the air out and create a vacuum.
• Valve S (Suction): On the stem. Press it to draw liquid up into the pipette.
• Valve E (Empty): On the side arm. Press it to release or dispense liquid in a controlled way.

Safety and Maintenance Tips

• Don't push the pipette in too far: Insert it only a few millimetres to form a seal. Pushing too far can dislodge the internal valves.
• Keep liquid out of the bulb: Liquid in the bulb can cause contamination or damage the rubber.
• Cleaning: Rinse with distilled water after use, especially after handling corrosive substances.
• Storage: Keep in a cool, dry place out of direct sunlight so the rubber doesn't crack over time.

Specifications

• Material: Red natural rubber
• Design: 3-valve "pinch-and-release"
• Size: 50ml
• Brand: None
• Product of India