Overview
The Pasteur pipette, named after Louis Pasteur, is a fundamental laboratory tool designed for transferring small liquid volumes with precision. These pipettes are indispensable in chemistry, biology, and medical laboratories due to their simplicity and effectiveness. Available in both glass and plastic variants, Pasteur pipettes can be disposable or reusable. Glass versions offer chemical resistance, while plastic ones provide convenience and safety. Some models include graduation marks for approximate volume measurements.
Structure and Working Principle
A standard Pasteur pipette consists of a straight glass or plastic tube with a tapered tip. The working principle relies on creating suction (manually or with a bulb) to draw liquid into the tube, then releasing the pressure to dispense it. The tapered end allows for controlled liquid release, making it ideal for precise applications. Some advanced versions incorporate rubber bulbs or integral filters for specialized uses like cell culture work or sterile transfers.
Key Features
Pasteur pipettes offer several notable features that make them laboratory staples. Their simple design ensures reliability and ease of use, while the variety of materials accommodates different chemical compatibility needs. Graduated versions provide approximate volume measurement capability. Sterile, pre-packaged options are available for medical and biological applications where contamination must be avoided. The disposable nature of many modern pipettes eliminates cleaning requirements and cross-contamination risks.
Application Areas
These pipettes find extensive use across scientific disciplines. In chemistry labs, they're employed for reagent transfer and sample preparation. Biological applications include cell culture work and media dispensing. Medical laboratories use sterile Pasteur pipettes for bodily fluid handling. They're also common in educational settings for teaching basic liquid handling techniques. Specialized versions serve in chromatography and micro-scale experiments.
Maintenance and Precautions
Proper handling ensures safety and longevity. Glass pipettes require careful storage to prevent breakage and should be inspected for chips before use. Plastic versions should be checked for chemical compatibility with the liquids being handled. For reusable pipettes, thorough cleaning and proper sterilization are essential. Disposable pipettes should never be reused. Always follow laboratory safety protocols, especially when handling hazardous materials.
B2B Procurement Guide
When purchasing Pasteur pipettes in bulk, consider material compatibility with your applications. Glass pipettes suit harsh chemicals but increase breakage risks, while plastic offers safety and disposability. Evaluate whether graduated or non-graduated versions better serve your needs. For sterile applications, verify sterilization certifications. Bulk purchasing typically offers significant cost savings, with prices varying based on material, graduation, and packaging specifications.
Related Manufacturers
- 主营：PCR管、八连管、离心管、吸头、离心瓶、移液管、培养板、培养瓶、培养皿、三角摇瓶
- 主营：离心瓶、冻存管、螺口管、滤芯吸头、移液吸头、吸头、PCR管、八连管、细胞培养
- 主营：酶标条、酶标板、移液器、吸头盒、凸面带、200加长、锥形瓶、pcr八连、聚丙烯、管管盖、移液管、过滤板、培养皿、冷冻管、培养瓶、离心瓶、深孔板、pcr管盒、连排管、反应板、八连管、避光管、螺口管、带滤芯、离心管
- 主营：口罩袋子、牛皮纸袋、通用包装膜、塑料食品袋、食品包装膜、食品包装袋、大米包装袋、手提杂粮袋、复合包装卷膜、三边封塑料袋、四边封塑料袋、八边封包装袋、八边封塑料袋、磨砂开窗包装袋、茶叶包装袋、包装袋、塑料袋、编织袋、复合包装袋、纸塑包装袋、月饼包装袋、八边封食品包装袋
- 主营：2ml冻存管、5ml样品瓶、淋洗液发生罐、巴氏吸管、八联管、试剂槽、细胞过滤器、冷冻管、无粉乳胶手套、移液器、离心管、丁腈手套、棕色冻存管、细胞培养锥形瓶、移液管、冻存盒、2mL样品瓶、冻存管
- 主营：冻存管、淋洗液发生罐、阴离子抑制器、巴氏吸管、样品瓶、试剂槽、色谱柱、离子色谱柱、细胞过滤器
- 主营：移液管、1ml双向、移液器、滤芯吸头、加长吸头、发光板、培养板、螺口管、离心管、站立管、细胞培养、独立包装、避光管管、滤芯盒装、消毒螺口、液体处理、灭菌包装、实验室用品、酶标板透明、实验室玻璃、塑料培养皿、三角细胞摇瓶
- 主营：离心瓶、离心管、过滤器、滤芯吸头、细胞刮刀、细胞培养板、无菌培养基、标准离心机、细胞培养瓶、血清移液管、培养基方瓶、胎牛血清、细胞过滤筛网、真空过滤器