Hiden Analytical Intelligent Graveimetric Analyzer (IGA)
The IGA (IGA 003, Hiden Analytical) is a gravimetric microbalance used to make vapor-liquid equilibrium measurements.
The microbalance consists of a sample pan and counterweight symmetrically configured to minimize buoyancy effects. The balance has a 1 microgram stable resolution. Approximately 75 milligrams of ionic liquid sample are used for experiments. A diaphram pump (MZ 2d, Vacuubrand) and a turbomolecular pump (TMU 064, Pfeiffer) are used in conjunction with a water jacket connected to a constant-temperature bath (RTE-111, Neslab) to pressurize and heat the sample.