AccuSorp HP (High Pressure) system is a static high-pressure gas adsorption analyzer that measures gas storage capacity, surface area, porosity, and adsorption kinetics at pressures up to 200 bar, reflecting the conditions that matter for real-world applications.
AccuSorp HP builds on more than 60 years of Micromeritics gas adsorption expertise, AccuSorp HP delivers publication-grade accuracy, automated operation, and high throughput to keep pace with the demands of modern R&D and industrial quality control (QC).
Traditional high-pressure adsorption analysis stifles productivity, requiring constant operator intervention across long analytical runs. AccuSorp HP is different, combining reliable accuracy with unattended operation and dual-sample analysis so your lab can analyze more, worry less, and trust every data point.
±0.04% full scale transducer accuracy
Blank tube tests confirm ±0.1% error at 100 bar – enabling confident measurement even with small sample quantities
Manifold temperature stable within ±0.02 °C
Kinetic data captured every 0.1 seconds
Automated elevator for dual free-space measurement
Dual servo valves achieve target manifold pressures within <1%
Restrictor plates prevent pressure overshoot, saving time and analysis gas
Touchscreen-driven stored methods that keep analyses running reliably from start to finish without the need for operator supervision
Dual analysis ports for parallel sample runs
Separate degas preparation to reduce downtime and prevent contamination risk
Compatible with dedicated degas stations, including new VacPrep (designed specifically for AccuSorp HP) and Smart VacPrep
Automated steps that eliminate mid-run interruptions – helping labs meet throughput targets with confidence
Stringent safety features ensure peace of mind for operators and procurement professionals, even when operating remotely.
Our intuitive MicroActive software generates publication-grade excess and absolute isotherms without manual post-processing. Spend less time reducing data and more time acting on it.
AccuSorp HP accommodates a range of sample tube sizes to support different sample types, quantities, and research requirements:
With ±0.1% error confirmed at 100 bar, AccuSorp HP delivers reliable data even with very small sample quantities. That is a critical advantage for researchers working with novel, scarce, or expensive materials such as MOFs, COFs, and advanced sorbents.
AccuSorp HP is a physisorption analyzer designed to deliver uncompromising precision at pressures up to 200 bar, with automation features that streamline workflows across both research and industrial QC labs.
| Analysis range | 0.00013 to 200 bar |
| Transducer accuracy | 200 bar ±0.04% FS |
| Sample ports | 2 |
| Gas inlets | 3 |
| Pressure relief valves | 2, set at 2.5 bar and 207 bar |
| Hydrogen sensors | 2, triggered at 1% concentration |
| Dosing and evacuation control | Two Servo Valves within <1% of target |
| Compatible gases | H₂, CO₂, CH₄, N₂, He, Ar, C₂H₆, C₂H₄, C₃H₈, C₃H₆, NH₃, and O₂* |
| Manifold temperature | 30-50°C ±0.02°C |
| Sample temperature | 80-500°C ±0.1°C Furnace |
| Dimensions | 104 cm Height |
| Weight | 60 kg |
| Power | 100-240VAC, 50/60Hz, 500VA |
| Sample chambers | 10cc 1/4″ Opening |
| Product compliance | RoHS and REACH Compliant |
Simply put: to automatically measure accurate gas adsorption isotherms at process relevant conditions. Fundamentally understanding the gas storage capacity of a material is critical for researchers focused on carbon capture, gas separations, and gas storage applications.
The higher the pressure, the more adsorption occurs. This is because the increased pressure forces the adsorbate molecules closer to the adsorbent surface, making them more likely to stick. Additionally, the higher the concentration of the adsorbate, the more adsorption occurs. AccuSorp HP operates at pressures up to 200 bar, capturing the full adsorption behavior of materials at the conditions where they will actually be deployed.
The volumetric method is the established standard for high-pressure gas adsorption. For professionals prioritizing precise measurements and operational ease, volumetric adsorption systems facilitate straightforward calibration, minimal downtime, and seamless integration into existing workflows. Compared to gravimetric analysis, volumetric systems are more cost-effective to purchase and operate, and they don’t rely on a sensitive microbalance that can be damaged through routine use or require frequent recalibration.
Empower your laboratory to elevate its research quality and make data-backed decisions that drive innovation with every high-pressure adsorption experiment completed.
At low pressures, excess and absolute isotherms are nearly identical, but at high pressures, the difference becomes significant. An excess isotherm measures only the gas adsorbed above what would be present in the bulk gas phase, while an absolute isotherm accounts for the total amount of gas in the adsorbed layer, including the contribution of the bulk gas density.
For applications such as hydrogen storage and CO₂ capture, the absolute isotherm gives a more physically meaningful representation of true storage capacity.
Most real-world gas storage and separation processes operate at elevated pressures. including hydrogen storage tanks, CO₂ capture systems, and gas separation membranes. Measuring adsorption only at low pressure tells you how a material behaves in the lab, not how it will perform in deployment.
High-pressure adsorption data reveals the storage capacity, saturation behavior, and kinetics that determine whether a material is viable at scale.
AccuSorp HP is suited to a wide range of porous and particulate materials, including metal-organic frameworks (MOFs), covalent organic frameworks (COFs), activated carbons, shales and minerals, catalysts, and other advanced sorbents. Its high-pressure capability makes it particularly valuable for screening and evaluating materials intended for use in gas storage, carbon capture, and separation applications, where performance at elevated pressures determines real-world viability.
AccuSorp HP is compatible with a broad range of gases, including CO₂, H₂, CH₄, N₂, O₂, and NH₃ (ammonia), among others.
Compatibility with O₂ and NH₃ extends AccuSorp HP’s application range beyond many competing systems.
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