This accessory meant for manually calibrating the UT-3000 Mercury Ultratracer.
The calibration unit is connected to the UT-3000 Ultratracer. With a special syringe a defined volume of mercury containing gas is drawn from the calibrator and injected into the calibration port of the UT-3000.
After entering the volume of the injected gas, the UT-3000 will automatically calculate the mercury mass from the volume injected and the calibration cell temperature.