Specifications

Standard specifications for Pasteur pipette bulbs. Items marked Customizable are available upon request.

For ID (mm)	Capacity (ml)	Material Options	Temp Range	Applications
5~6	1	NR / VMQ	Per material	Micro-operations, cell work
6~7	2	NR / VMQ	Per material	General micro-operations (most common)
7~8	3	NR / VMQ	Per material	Larger volume micro-operations

Dimensions are typical values. VMQ offers better biocompatibility for cell experiments.

📌 Customization Options:
• Material options (NR / VMQ / other)
• ID customization
• Color options

Product Description

I. Overview

The Pasteur pipette bulb is a rubber accessory specifically designed for Pasteur pipettes. Manufactured from high-quality natural rubber (NR) or silicone rubber (VMQ) via precision compression molding, compatible with 5~8mm ID Pasteur pipettes.

Ideal for micro-liquid transfer and cell operations. VMQ offers excellent biocompatibility for biological experiments — a common tool in cell biology, microbiology, and fine chemistry.

🔬 Product Advantages:
For Pasteur Pipettes — Perfect fit for 5~8mm ID
Two Materials — NR/VMQ for different applications
Micro-Operations — Ideal for fine liquid transfer and cell work
Biocompatible — VMQ suitable for biological experiments
Easy to Use — Ready to install, no special tools

II. Key Performance Parameters

Material: NR / VMQ
For ID: 5~8mm
Capacity Range: 1~3ml
Temperature Range: -30~80°C (NR) / -60~200°C (VMQ)
Applications: Micro-liquid transfer, cell operations, fine experiments

III. Material & Manufacturing

Manufactured from high-quality natural rubber (NR) as the standard option, with silicone rubber (VMQ) available upon request. Produced via precision compression molding with uniform wall thickness and smooth surfaces.

VMQ offers a wider temperature range (-60~200°C) and excellent biocompatibility, particularly suitable for cell biology and biopharmaceutical applications.

Applications

Typical Applications

Cell Operations

Cell transfer and isolation with Pasteur pipettes

Micro-Liquid Transfer

Precise microliter-scale liquid transfer

Microbiology

Bacterial suspension transfer, single colony picking

Fine Chemistry

Micro-reagent dispensing and transfer

Applicable Fields

Cell Biology Labs
Microbiology Labs
Molecular Biology Labs
Pharma & Biotech

Selection Guide

I. Select by Material

Material	Properties	Applications
NR	Good elasticity, economical	General micro-operations, teaching
VMQ	Biocompatible, -60~200°C	Cell work, biopharma, fine operations

II. Select by ID

5~6mm: Fine Pasteur pipettes for micro-operations
6~7mm: Standard Pasteur pipettes (most common)
7~8mm: Larger Pasteur pipettes for bigger volumes

💡 Selection Tips: General micro-operations choose 6~7mm NR bulbs.
Cell work/Biological experiments choose VMQ.
Ensure the bulb ID closely matches the Pasteur pipette OD.
Consider all three IDs for different Pasteur pipette sizes.

Operation & Maintenance

User Guide

I. Installation

Select a bulb matching your Pasteur pipette ID
Gently expand the bulb opening
Insert the Pasteur pipette top into the bulb
Rotate gently to achieve a tight fit

II. Usage

Insert the pipette into the liquid to be transferred
Compress the bulb to expel air
Release the bulb to aspirate liquid
Move to target and compress to dispense

💡 Tips from Experienced Technicians: "Match the size" — Bulb ID should be slightly smaller than pipette OD.
"Avoid overstretching" — Don't overstretch the bulb during installation.
"Cell work choose VMQ" — Cell experiments prioritize silicone (VMQ).
"Replace regularly" — Replace bulbs every 6~12 months as elasticity decreases.

Care & Notes

Show care & notes

⚠️ Safety Notes

Wear lab coats and gloves during operation
Follow biosafety protocols when handling biological samples
Replace immediately if hardening, cracking, or deformation is observed

Pasteur Pipette Bulb

Specifications

Product Description

I. Overview

II. Key Performance Parameters

III. Material & Manufacturing

Applications

Cell Operations

Micro-Liquid Transfer

Microbiology

Fine Chemistry

Selection Guide

I. Select by Material

II. Select by ID

User Guide

I. Installation

II. Usage

Care & Notes

Need Pasteur Pipette Bulbs?

Pasteur Pipette Bulb

Specifications

Product Description

I. Overview

II. Key Performance Parameters

III. Material & Manufacturing

Applications

Cell Operations

Micro-Liquid Transfer

Microbiology

Fine Chemistry

Selection Guide

I. Select by Material

II. Select by ID

User Guide

I. Installation

II. Usage

Care & Notes

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