METTLER TOLEDO's primary portable pH meter is Pro2Go. It is compatible with both analog sensors and pH sensors with digital Intelligent Sensor Management (ISM®) technology. This means it has full sensor diagnostics, including DLI, ACT and TTM. Pro2Go’s intuitive menu ensures out-of-the-box operation for anyone. The meter’s ergonomic design allows one-handed operation for both big and small hands. The light weight of the portable pH meter Pro2Go, makes measurement easy and convenient, even over lengthy periods of repeated measurement. METTLER TOLEDO also offers the pH 1120X portable pH meter, which is specially designed for use in potentially explosive areas in the chemical industry.