By Surface Measurement Systems Ltd
Using the Knudsen Effusion Method, the Vapor Pressure Analyzer is a unique tool for measuring the vapor pressure of solids, liquids, and oils. Overview The Vapor Pressure Analyzer (VPA) measures the vapor pressure of solids, liquids, and oils with exceptional accuracy using the Knudsen Effusion method, a highly sensitive gravimetric technique. Designed for reliable and precise measurements, the VPA helps researchers understand how materials evaporate and behave under different conditions. This information is critical for product development, formulation, and stability studies across industries such as pharmaceuticals, agriculture, and specialty chemicals. Top-flight Benefits (KSPs) Knudsen Effusion Vapor Pressure Measurement Wide Vapor Pressure Measurement Range (10⁻¹²–10⁵ Pa) Temperature up to 400 °C High-Vacuum Operation down to 10⁻6 Torr Key Features Common Applications Resources - Knudsen Effusion Vapor Pressure Measurement - UltraBalance Gravimetric Sensitivity (0.1 µg Resolution) - Wide Vapor Pressure Measurement Range (10⁻¹²–10⁵ Pa) - High-Temperature Capability up to 400 °C - High-Vacuum Operation down to 10⁻ 6 Torr - Pharmaceutical and Drug Substance Development - Agrochemicals and Crop Protection Products - Energetic Materials and Propellants - Lubricants, Fuels, and Specialty Oils - Fragrances and Flavors - Application Note 48: Vapor Pressure Measurement of Pesticides using the Knudsen effusion cell method with the VPA instrument - Application Note 106: Vapor Pressure Measurements Knudsen Effusion Method Unparalleled Capabilities Low Vapor Pressure Measurement Accurately measure extremely low vapor pressures of solids, liquids, and oils using the highly sensitive Knudsen Effusion method. Vaporization and Sublimation Studies Determine thermodynamic properties such as enthalpy of vaporization or sublimation from precise vapor pressure measurements. High-Temperature Vapor Pressure Analysis Study vapor pressure behavior of materials at elevated temperatures to support formulation and stability research. Material Stability and Volatility Studies Evaluate evaporation behavior and thermal stability of compounds used in pharmaceuticals, agrochemicals, and specialty chemicals. Vapor Pressure Analyzer Knudsen Effusion Method Vapor Pressure Analyzer TEMPERATURE RANGE: HIGH TEMPERATURE PRE-HEATER: MASS RESOLUTION: PRESSURE MEASUREMENT: VACUUM PRESSURE: TEMPERATURE RANGE: TEMPERATURE RANGE: 5 °C to 85 °C HIGH TEMPERATURE PRE-HEATER: Up to 400 °C MASS RESOLUTION: ± 0.01 µg PRESSURE MEASUREMENT: Cold cathode ionization current for vacuum pressure measurements VACUUM PRESSURE: As low as 1x 10-6 Torr TEMPERATURE RANGE: 5 °C to 85 °C Download Full Spec Sheet
Conduct 5x simultaneous analysis with the DVS Endeavour, combining the highest throughput with a diverse range of accessories and capabilities. Offering the highest throughput of our DVS range, the DVS Endeavour, is a high-throughput parallel gravimetric sorption analyzer designed to measure moisture and vapor sorption in solid materials with exceptional efficiency. Featuring five independent microbalances and sample chambers, the system enables simultaneous sorption experiments on up to five samples under identical temperature and humidity conditions. This parallel measurement capability dramatically increases experimental throughput while maintaining the precision and reliability of SMS gravimetric sorption technology. Top-flight Benefits (KSPs) 5x Throughput of Standard Machine Dual-Vapor Generation for Multi-Component Sorption Identical Sample Environments Temperature Range: 10-70°C Key Features Common Applications Resources - Five times the throughput of a standard DVS analyzer - Immediate organic vapor measurement - Real-time sorption kinetics analysis - True0 RH 0-98% RH - 1 µg UltraBalance gravimetric sensitivity - High-throughput and batch variation analysis - Pharmaceutical stability & amorphous content - Hygroscopicity of powders, fibers and solids - Food shelf-life & water activity - Polymer diffusion and permeability - Water and organic vapor sorption kinetics - Application Note 65: Impact of Relative Humidity on VOCs Sorption - Application Note 103: DVS Organic Overview - Application Note 40: Mixed Isotherms Unparalleled Capabilities High-Throughput, Multi-Sample Analysis With five sample chambers, the DVS Endeavour enables simultaneous measurement of multiple samples, maximizing throughput. Intuitive software, guided workflows, and minimal maintenance reduce operator time and increase efficiency. UltraBalance Gravimetric Sensitivity Patented UltraBalance technology delivers 0.01 µg resolution for detecting subtle sorption changes, with total capacity up to 5 g for larger or multiple samples. Real-Time Vapor Measurement & Multi-Component Capability Patented Speed of Sound (SOS) sensor provides real-time organic vapor measurement (±0.1% accuracy). Supports up to two vapors across all five samples for advanced multi-component studies. Modular Accessory Ecosystem Expand capabilities with preheating up to 200 °C, in-situ video, Raman spectroscopy, diffusion (Payne cells), and a range of pan and chamber configurations. DVS Endeavour TEMPERATURE RANGE: TEMPERATURE STABILITY: MASS RESOLUTION: MAX LOAD: RH RANGE: HUMIDITY STABILITY: VAPOR CAPABILITY: TEMPERATURE RANGE: 10 °C to 70 °C TEMPERATURE STABILITY: ± 0.05 °C over 6 hours MASS RESOLUTION: ± 0.01 µg (low mass) / 0.1 µg (high mass) MAX LOAD: 1g (low mass) / 5g (high mass) RH RANGE: 0%-98% RH HUMIDITY STABILITY: ± 0.1 %RH VAPOR CAPABILITY: Water, Organic solvents, Competitive (Dual)
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Dual Balance Gravimetric Vapor Sorption Analyzer for Higher Throughput Overview The DVS Discovery is a high-throughput gravimetric Dynamic Vapor Sorption (DVS) analyzer designed to measure moisture and vapor sorption in solid materials with exceptional precision and efficiency. Featuring two balances, the system enables simultaneous sorption experiments under identical environmental conditions, significantly increasing experimental throughput while maintaining the accuracy and reliability of SMS gravimetric sorption technology. Top-flight Benefits (KSPs) Dual Balance Design for Increased Throughput Identical Sample Environments Two Simultaneous Sorption Experiments Temperature Range: 10-70°C Key Features Common Applications Resources - Run parallel experiments with a dual balance design - Identical environmental conditions for direct sample comparison - True0 RH: 0-98% RH - 01 µgUltraBalance gravimetric sensitivity - High-throughput and batch variation analysis - Pharmaceutical stability & amorphous content - Hygroscopicity of materials and powders - Food shelf-life & water activity - Polymer diffusion and permeability - Moisture uptake and sorption kinetics Unparalleled Capabilities Dual Sample Measurement for Higher Throughput Innovative dual-balance design enables simultaneous mass measurement of two samples, increasing throughput and reducing operator time. Exceptional Long-Term Temperature Stability Multiple temperature zones and matched vapor delivery prevent condensation and ensure highly stable conditions (±0.05 °C at 25 °C). Real-Time Vapor Measurement & Multi-Component Capability Patented Speed of Sound (SOS) sensor measures organic vapor concentration in real time (±0.1% accuracy). Supports up to two vapors across two samples for advanced multi-component studies. Modular Accessory Ecosystem Expand capabilities with preheating up to 200 °C, in-situ video, Raman spectroscopy, diffusion (Payne cells), and a range of pan and chamber configurations. DVS Disocery Dual Balance Gravimetric Vapor & Organic Solvent Sorption Analyzer DVS Discovery TEMPERATURE RANGE: TEMPERATURE STABILITY: MASS RESOLUTION: MAX LOAD: RH RANGE: HUMIDITY STABILITY: VAPOR CAPABILITY: TEMPERATURE RANGE: 10 °C to 70 °C TEMPERATURE STABILITY: ± 0.05 °C over 6 hours MASS RESOLUTION: ± 0.01 µg (low mass) / 0.1 µg (high mass) MAX LOAD: 1g (low mass) / 5g (high mass) RH RANGE: 0%-98% RH HUMIDITY STABILITY: ± 0.1 %RH VAPOR CAPABILITY: Water, Organic Solvents, Competitive (Dual)
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Water Vapor Sorption Analyzer The DVS Adventure is the most advanced water vapor Dynamic Vapor Sorption (DVS) analyzer designed for precise water vapor sorption in solid-state materials. The system provides accurate control of relative humidity and temperature, enabling detailed moisture uptake, sorption kinetics, and humidity-driven transformations. Housed in a temperature-controlled incubator to enhance thermal stability, the DVS Adventure delivers highly reproducible, humidity-controlled sorption measurements across a wide experimental range while enabling the full SMS range of accessories for all applications. Top-flight Benefits (KSPs) Water Vapor Sorption Specialization 0–98% RH Humidity Control Temperature Range from 5-85°C Real-time Sample Sorption Kinetics Key Features - Precise water vapor sorption measurement - Real-time sorption kinetics analysis - True0 RH: 0-98% RH control - UltraBalance sensitivity (0.01 µg) - Sample capacity: Up to 5 grams Common Applications - Pharmaceutical stability & amorphous analysis - Food shelf-life & water activity - Polymer and membrane diffusion - Moisture uptake in natural materials - Sorption isotherms & kinetics - Hygroscopicity of powders and solids Resources - Application Note 101: DVS Pharmaceutical Overview - Application Note 42: Crystallization Kinetics - Application Note 52: Vapor Permeability using Payne Diffusion Cell - Application Note 109: Moisture-induced Degradation Using DVS and Raman Unparalleled Capability The DVS Adventure’s advanced capabilities are designed to deliver deeper insight into complex material behavior. Fully Automated Moisture Sorption Analysis Measure water vapor uptake and sorption kinetics in solid materials to understand hygroscopicity and moisture-driven transformations. Intuitive software, guided workflows, and low maintenance maximize productivity while minimizing operator time. UltraBalance Gravimetric Sensitivity Patented UltraBalance technology delivers up to 0.01 µg resolution, enabling detection of extremely small sorption changes, with capacity up to 5 g for flexible sample analysis. True0 RH & Precise Environmental Control Achieve true 0.0% RH with excellent temperature and humidity stability (±0.2 °C at 25 °C). The isothermal design prevents condensation and ensures reliable low-RH sorption measurements. Modular Accessory Ecosystem Expand capabilities with preheating up to 200°C, in-situ video, Raman spectroscopy, diffusion (Payne cells), and a range of pan and chamber configurations. DVS Adventure Automated dynamic water vapor sorption analyzer DVS Adventure TEMPERATURE RANGE: 5 °C to 85 °C TEMPERATURE STABILITY: ± 0.2 °C over 6 hours MASS RESOLUTION: ± 0.01 µg (low mass) / 0.1 µg (high mass) MAX LOAD: 1g (low mass) / 5g (high mass) RH RANGE: 0%-98% RH VAPOR/GAS CAPABILITY: Water sorption and desorption ADD ONS: Preheater up to 200 °C, Raman, and video options
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INSTRUMENT DVS Resolution Discover what makes the DVS Resolution the most popular moisture and organic sorption analyzer. Overview The DVS Resolution is SMS’s flagship Dynamic Vapor Sorption (DVS) instrument, delivering unmatched precision for analyzing organic vapor concentration in real time and enabling independent control of water vapor and organic solvents for multi-component sorption studies. Built on the legacy of the original DVS technology pioneered by Surface Measurement Systems, the DVS Resolution provides industry-leading performance for measuring moisture and organic vapor uptake in solid materials with exceptional accuracy and reproducibility. Top-flight Benefits (KSPs) Water and Organic Vapor Measurement Dual-Vapor Generation for Multi-Component Sorption Temperature Range 5-85 °C Real-time sorption kinetics analysis Key Features Common ApplicationsFeatures Resources - Real-time water and organic vapor sorption measurement - Dual-vapor generation for multi-component studies - Real-time sorption kinetics analysis - True⁰ 0-98% RH control - UltraBalance sensitivity (0.01 µg) - Sample capacity: Up to 5 grams - Pharmaceutical hydrates, solvates & amorphous stability - Food shelf-life, flavors, fragrances & water activity - Diffusion and solubility in polymers and membranes - Water uptake & surface area of natural and synthetic materials - Sorption isotherms and kinetics in porous materials and catalysts - Hygroscopicity of powders, fibers, and solids - Application Note 103: Organic Solvent Sorption using a Dynamic Vapour Sorption Instrument-an Overview - Application Note 45: Investigation of Desolvation Kinetics Using the DVS - Application Note 66: SoS, An Overview of the Speed of Sound Sensor Theory and Application - Application Note 38: Determination of Mesopore Size Distribution by Organic Vapour Sorption - Application Note 40: Using the DVS to Study the Water Sorption Properties of Multi-Component Systems Unparalleled Capability The DVS Resolution breaks new ground in gravimetric sorption analysis, offering a unique combination of dual-vapor capability, high temperature control, and ultra-high resolution balance. Automated Water & Organic Vapor Measurement Patented Speed of Sound (SOS) sensor delivers real-time vapor control (±0.1% accuracy). Fully automated operation with intuitive software and minimal maintenance. UltraBalance Gravimetric Sensitivity Industry-leading resolution down to 0.01 µg, with capacity up to 5 g for flexible sample analysis. True0 RH & Stable Environmental Control Achieve true 0-98% RH with excellent long-term stability (±0.2 °C). Ideal for low-humidity studies and precise sorption analysis. Modular Accessories & Advanced Capabilities Wide range of options including preheating (up to 200 °C), in-situ video, Raman spectroscopy, and diffusion cells. Dual Vapor Gravimetric Sorption Analyzer Discover what makes the DVS Resolution the most popular sorption analyzer. DVS Resolution TEMPERATURE RANGE: TEMPERATURE STABILITY: MASS RESOLUTION: MAX LOAD: RH RANGE: HUMIDITY STABILITY: VAPOR CAPABILITY: TEMPERATURE RANGE: 5 °C to 85 °C TEMPERATURE STABILITY: ± 0.2 oC over 24 hours MASS RESOLUTION: ± 0.01 µg (low mass) / 0.1 µg (high mass) MAX LOAD: 1g (low mass) / 5g (high mass) RH RANGE: 0%-98% RH HUMIDITY STABILITY: ± 0.1 %RH VAPOR CAPABILITY: Water, Organic solvents, Competitive (Dual) Download Full Spec Sheet DVS Resolution Citations
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