This listing is for a Jenway 3540 pH & Conductivity Meter. The unit is in full working condition and is ready for immediate release. The Jenway 3540 is a versatile combined pH and conductivity meter tailored for water testing applications in laboratories. Its compact design and dual functionality make it an excellent choice for efficient analysis of both parameters. Key features include conductivity measurement range from 0.01 μS/cm to 1.999 S/cm, pH measurement range from 2 to 20.000, temperature measurement range from -10.0 to 105.0°C (14 to 221°F), salinity and TDS measurement, resistivity and ORP/Redox measurement via pH channel, ultra-pure water function, manual and automatic temperature compensation, adjustable conductivity-to-TDS factor (0.4 to 1.0), user-friendly features including selectable temperature units, ready indicator and measurement hold. Data management includes storage for up to 500 data sets with date and time stamps, USB or RS232 output for data transfer, and GLP-compliant data storage. Compact design features built-in stand and wall-mount option. Ideal for water quality testing, laboratory research, aquaculture and hydroponics applications.