Pipettes

Introduction to Pipettes

Pipettes are dedicated instruments used for measuring, dispensing, and transferring defined liquid volumes in chemical, biomedical, and testing laboratories. This category includes graduated measuring pipettes, volumetric pipettes, Pasteur pipettes, Westergren pipettes, and sterile sampling pipettes, serving various applications from precise quantification to routine sample transfer.

Khi lựa chọn ống hút, người dùng cần xem xét vật liệu phù hợp như thủy tinh borosilicat 3.3 chịu hóa chất, thủy tinh soda-lime hoặc các loại nhựa PS, PE-LD, PET. Độ chính xác cũng là tiêu chí then chốt, phân định qua cấp chính xác Class A hoặc Class AS theo tiêu chuẩn DIN EN ISO 835, DIN EN ISO 3819, bên cạnh các tùy chọn vô trùng không chứa pyrogen. Hóa Việt hiện phân phối các dòng ống hút từ các hãng sản xuất như Duran, Hirschmann, Assistent, Vitlab, Aptaca, Kimble-DWK và Interscience.

When should you choose volumetric pipettes versus graduated measuring pipettes?

Volumetric pipettes (bulb pipettes) are designed to aspirate and dispense a single fixed volume with high accuracy at Class A or Class AS, ideal for sample preparation and standard solution formulation. Meanwhile, graduated measuring pipettes allow operators to flexibly measure and dispense varying volumes according to the graduation marks on the tube body.

What does the Class AS designation on glass pipettes mean?

The Class AS designation indicates that the pipette achieves high precision equivalent to Class A, while offering a faster delivery flow time according to technical standards. Class AS products typically comply with DIN EN ISO 835 or DIN EN ISO 3819 standards and may come with batch certificates.

What is the difference between glass Pasteur pipettes and plastic Pasteur pipettes?

Glass Pasteur pipettes with a length of 150mm withstand various chemicals and organic solvents, making them suitable for liquid transfers in synthetic analysis. Plastic Pasteur pipettes made of LDPE or PET are flexible, shatterproof, and available in sterile options to reduce cross-contamination risks in biological procedures.

Which brands of pipettes does Hoa Viet currently supply?

Hoa Viet supplies glass and plastic pipette lines from brands including Aptaca (Italy), Assistent (Germany), Duran (Germany), Hirschmann (Germany), Interscience (France), Kimble-DWK (USA), and Vitlab (Germany). Buyers can contact Hoa Viet directly for technical advice and to request a quote for specific product codes.