Features: This pipette is a precise liquid transport device whose volume can be adjusted within a certain range. Light weight and ergonomic design provide comfortable grip. Digital viewing area ensures a clear and intuitive reading at a glance. Fine adjustment structure can be for convenient calibration and regulation, if any accidental error. The bottom half part can be removed with special hex wrench, and disinfected under high temperature and high pressure. Suitable for transporting measured volume of liquid during analysis and experiment in teaching, chemical industry, scientific research departments. Specifications: Material: Plastic Model: M200 Type: Single‑channel Volume: 20~200ul Test Volume Precision Error Repetitive Error Increment Tip 200ul ± 0.60% ±0.15% 1ul 200ul 100ul ±0.80% ±0.30% 20ul ±3.00% ±1.00% Size: Approx. 28 x 6 x 2.3cm/11.02 x 2.36 x 0.9in Quantity: 1pc Weight: 181g(approx.) Package Includes: 1 x Pipette 1 x Calibration Oil 1 x Wrench Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .