This is an Eppendorf Research 2100 single-channel adjustable pipette, likely with a volume range of 20-200 µL. It is a reliable tool for precise liquid handling in laboratory applications. 

• Designed for accuracy and consistency in various applications. 

• Ergonomic design ensures comfortable operation during prolonged use. 

• Equipped with a tip cone that guarantees a secure fit for pipette tips, minimizing leaks. 

• The Research plus version is fully autoclavable without disassembly.