With decades of experience in the field of gas sorption, the Autosorb iQ series from Anton Paar GmbH can perform measurements of non-porous, mesoporous and microporous materials with accuracy and precision.

The system is capable of determining specific surface areas below 0.01 m2/g, as well as the pore volume, active areas and pore size distribution (down to as low as 0.35 nm) in porous solids. These measurements are fully compliant with more than 20 ASTM, ISO, and DIN standard test methods, making Autosorb iQ the ideal system for users looking to perform intelligent particle analysis.

Autosorb iQ MP

  • A workhorse high vacuum physisorption analyzer
  • Can quantify BET mesopores, surface areas, and micropores

Autosorb iQ XR

  • An extended-range physisorption analyzer
  • Fitted with a 0.1 torr transducer
  • Able to execute challenging micropore analysis

Autosorb iQ C-AG

  • Ideal for quantifying active metal area and BET surface area
  • Executes chemisorption analysis and dual-purpose physisorption

Autosorb iQ C-MP

  • A high vacuum physisorption and chemisorption analyzer
  • Capable of examining BET surface and active metal area
  • Can analyze micropore size distribution

AutosorbiQ C-XR

  • Fitted with a 0.1 torr transducer
  • Can measure hard catalyst
  • Executes extended chemisorption analysis and range physisorption

Key Features

Active Coolant Level Control for Sensitivity, Accuracy, and Reproducibility

Coolant level control is vital if physisorption analyzers are to obtain accurate and reproducible results when handling evaporative coolants similar in nature to liquid nitrogen.

Rather than relying on empirical corrections or passive wicking systems, the autosorb iQ series combines a 90+ hour analysis Dewar, a responsive elevator and a coolant-level sensor, all integrated into an advanced active coolant level control system that ensures highly sensitive and precise measurements irrespective of analysis time.

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

Image Credit: Anton Paar GmbH

Integrated and Highly Precise Sample Preparation

Accurately prepared samples are the key to accurate analytical data. The system has four built-in degassing stations that provide access to analysis-quality levels of vacuum via a dedicated cold trap. This helps to ensure that challenging microporous samples are suitably prepared for analysis.

The instrument follows a user-flexible program of test protocols, such as pressure rise limit and test for completion techniques, reducing elutriation and steaming damage to vulnerable samples.

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

Image Credit: Anton Paar GmbH

Peer-Reviewed Methods

The software is available with a vast, peer-reviewed DFT method library. These proprietary data reduction methods, such as the Quenched Solid Density Functional Theory (QSDFT) method which provides reliable and precise data on pore size distributions, were established in collaboration with academics.

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

Image Credit: Anton Paar GmbH

Analysis Flexibility and Adaptability

Autosorb iQ systems are the most versatile, flexible and customizable physisorption and chemisorption analyzers on the market, and users can upgrade to two or three analysis stations for up to two or three times the physisorption throughput.

Every extra analysis station comes with a dedicated transducer set, thereby allowing the utmost flexibility in analysis conditions without compromising performance or speed. The system operations can also be adjusted to include an integrated vapor source, extra gas inputs, and much more.

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

Image Credit: Anton Paar GmbH

Technical Specifications

Source: Anton Paar GmbH

  autosorb iQ series
Physisorption analysis
1, 2, or 3
Chemisorption analysis
stations (-C models)
  • Metal-to-metal seals in critical measurement zones
  • Choice of EPDM, Viton, PFE elastomers
Adsorbates N2, Ar, Kr, CO2, O2, H2, etc.
Analysis dewar 3 L, 90+ hours (liquid nitrogen)
Cryogen level control Active sensor/elevator
Saturation pressure measurement Dedicated cell with dedicated transducer
Chemisorption furnace
(-C models)
  • Maximum temperature: 1100 °C
  • Ramp rates: 1 °C to 50 °C per minute
  • Furnace cooling by built-in fan
Dosing modes Target p/p0 with:
  • MaxiDose (automatically adapts to individual sample’s sorption characteristics)
  • VectorDose (fixed volumes in multiple ranges) DoseWizard (uses prior analysis as template)
Void volume modes
  • Automatically measure and re-measure during analysis
  • Re-use value already measured
  • Helium-free method
1/0.1 torr transducer
accuracy (MP/XR)
<0.15% of reading*
Vacuum system (MP/XR)
  • Turbomolecular drag pump and dry backing pump
  • Ultimate vacuum: 5 x 10-10 mbar*
p/p0 Range (XR using nitrogen/argon) 10-8 to 0.999
Minimum surface area 0.01 m2/g**
Minimum pore size 0.35 nm**
  • Four dedicated and built-in degassing ports
  • Operate simultaneously with analysis up to 450 °C with quartz mantles/glassware
  • Vacuum level monitored with Pirani
Physical and utilities Width: 699 mm (28 inches)
Height: 1035 mm (41 inches)
Depth: 705 mm (28 inches)
Weight: 148 kg (325 pounds)
Electrical: 100 VAC to 240 VAC, 50/60 Hz, single phase
Controller: PC with Windows 7 or newer. 64-bit compatible software

*Manufacturers' specification
**Dependent on analysis gas and temperature 

Other Equipment by this Supplier