The document provides specifications and features of two benchtop dissolved oxygen meters (LBDO-A10 and LBDO-A11), both equipped with polarographic sensors for measuring dissolved oxygen in various applications such as water management and environmental monitoring. The LBDO-A10 offers automatic temperature compensation and can store data for up to 500 readings, while the LBDO-A11 features a USB interface for data transfer and a higher accuracy level. Both meters include calibration, salinity compensation, and a user-friendly display with multiple settings options.