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VAPOR SORPTION ANALYSIS

VAPOR SORPTION ANALYSIS
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VAPOR SORPTION ANALYSIS

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Sensitive Measurements, Precise RH Control The patented Q5000 SA delivers the performance and reliability required in a leading sorption analyzer in a compact, user-friendly design. The Q5000 SA is designed for manual or automated sorption analysis of materials under controlled conditions of temperature and relative humidity (RH). Its design integrates our high-sensitivity, temperature-controlled thermobalance with an innovative humidity generation system, multi-position autosampler, and powerful Advantage™ software with technique-specific programs and Platinum™ features

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The Q5000 SA is a compact, benchtop instrument that delivers the performance and reliability required in a leading sorption analyzer designed for the study of materials under controlled conditions of temperature and relative humidity. Its modern, user-friendly design features a high sensitivity, temperature-controlled thermobalance, an innovative humidity generation system, a 10-position autosampler, and our latest Advantage™ software with Platinum™ features. Humidity Control Chamber The patented design features a pair of mass flow Sample Chamber controllers that accurately meter and...

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GRAVIMETRIC VAPOR SORPTION ANALYSIS GENERAL PRACTICE Vapor Sorption analysis is an established technique for determining the effect on materials of exposure to controlled conditions of temperature and humidity. Isotherm and Isohume™ experiments are the most commonly performed analyses. All TA Instruments sorption analyzers perform a range of essential sorption experiments such as time-courses, isotherms (constant temperature, variable RH), and isohumidity (Isohume™) experiments (constant RH, variable temperature). Complex protocols with step changes in temperature and RH can be defined and...

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The Q5000 SA Thermal Advantage Platinum software has a built-in humidity verification feature and deliquescence method that allows the user to determine the humidity level in the Applications Humidity Verification purge gas at a ﬁxed temperature. The method conforms to ASTM E2551. reaches a critical level or deliquescence point. At a given temperature and that specific %RH, the hygroscopic material suddenly starts absorbing any available moisture resulting in rapid increase of weight until the salt dissolves. Humidity Verification: 75.60%. Expected Sodium Chloride Deliquescence Point 75.30%...

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Weight Change (%) Amorphous Anhydrous The figure to the right contains the experimental results demonstrating the formation of a hydrate. The hydrate formation is characterized by a plateau in the desorption branch of the isotherm. In this example the hydrate is formed at around 45% RH. The sample adsorbs about 4.5% by weight water and does not lose the water of hydration until the RH is lowered below 25%. This hydrate would be considered as a labile or unstable hydrate. Pharmaceutical scientists are often interested in determining the amount of amorphous material in a drug formulation. As...

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Temperature Controlled Thermobalance Dynamic Range Weighing Accuracy Weighing Precision Sensitivity Baseline Drift1 Signal Resolution Temperature Control Temperature Range Isothermal Stability Relative Humidity Control Range Accuracy Autosampler - 10 samples** Platinum™ Software Sample Pans Quartz or Metal-Coated Quartz 180 pL Platinum 100 pL Aluminum Sealed Pan 20 pL Over 24 hours at 25°C and 20 % RH with empty metal coated quartz pans Optional tray accommodates 25 samples for use with platinum and sealed aluminum pans

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