Water content of all types of samples
The combination of the AQUA 40.00 and the headspace technique offers a wide range of interesting applications to determine water content in solid and pasty samples, oils and viscous compounds.
It does not require time-consuming sample preparation: Weigh the sample in a headspace vial, close and seal the vial, and then administer it into the AQUA 40.00 headspace oven.
The analysis procedure starts with heating up the sample up to a temperature set prior. A carrier gas transports the water from the sample into the measuring cell where the water is titrated.
With the unique advantage of the system using the closed-loop-carrier gas circulation, any additional gas drying is no longer necessary. Hence, the carrier gas is continually titrated to dryness within the closed loop. The total dryness of the gas enhances the water liberation, and sensitive samples can be heated out very gently.
Water liberation becomes possible even at ambient temperature. All these advantages result in reducing reagent consumption considerably. Furthermore, temperature-programmed heating procedure can be defined individually by the user.
Such a temperature program reveals in which way the water in question is bonded to the sample substance. You can distinguish between chemically bonded water of crystallization, adsorbed surface water.
- Pharmaceutical products
- Biological substances
- Hygroscopic compounds
- Freeze-dried products, e. g. lyophilized cultures
- Oils and pastes
- Viscous materials
- Powder and pellets