In 1958, Eppendorf invented the world* piston-only microliter pipette. In 1960, it obtained the patent for this invention. It has a full range of micropipettes of various sizes and brands. Other international manufacturers include TOMOS Company of the United States, BRAND Company of Germany and Sanyo Company of Japan. Domestic manufacturers include Beijing Qingyun Aviation Instrument Co., Ltd. and Dalong Medical Equipment Co., Ltd. The different types of pipettes are described below with the products of Eppendorf.
(1) The whole sterilizable pipette (Eppendorf Company Reference single-channel micro-adjustable pipette 4910)
Performance characteristics: It can display 4 digits; the whole pipette can be autoclaved; it has a unique single lever structure; it is designed with a capacity adjustment knob safety lock to avoid the volume change of the pipetting process; the lower end is slender and easy to narrow The liquid is removed from the long container; the small-range (less than 100~d) pipette is a metal piston; the large-range (greater than 100g1) pipette is a sandwich ceramic piston, which is wear-resistant and corrosion-resistant; Standard nozzle; three-point calibration is available.
(2) Half-disinfectable pipette (Eppendorf Research Series)
Performance characteristics: the upper and lower ends of the pipette can be detached, the lower part can be autoclaved; the outer casing adopts new anti-UV material; the multi-channel adjustable pipette is divided into two types: eight and twelve; the rubber ring at the tip ensures Closely integrated.
(3) Electric pipette (Eppend.rf electronic pipette RESEARCHPRO 4860)
Performance characteristics: There are three operating modes (PIP, DIS, FIX); LCD digital can display a number of indicators such as the amount of suction, continuous sampling and loading speed; motor drive sample loading, rechargeable; with distribution function, Zui More than 20 allocations can be made; the liquid volume can be directly changed, which is convenient and quick; the amount of residual liquid can be directly measured; programming can be performed.
(4) PCR special pipette (Eppendorf PCR special pipette 4830)
Performance characteristics: mainly used for precision experiments such as PCR; with special piston nozzle to ensure no cross-contamination; non-air piston pushing principle, hand contact temperature, liquid viscosity and other factors will not affect its accuracy; unique Single joystick structure; five-point calibration is available.
In addition, there are large-capacity pipettes (Eppendorf large-capacity adjustable pipette Varipette), electronic continuous pipettes (Eppendorf continuous multi-distributor Muhipette/Plus/Pro), bottle mouth pipettes (Brand bottle mouth shift) Different types of pipettes, such as Liquid Dispensette*) and Electronic Titrator (Brand Electronic Burette).
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