Posted in | Surface Analyzers

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

The autosorpiQ series from Anton Paar GmbH has been built with decades of expertise in the gas sorption field, capable of performing the most difficult measurements of non-porous, mesoporous and microporous materials with precision and accuracy.

The system is capable of finding particular surface areas below 0.01 m2/g, pore volumes, active areas and pore size distributions as low as 0.35 nm of porous solids. All these measurements comply with over 20 ASTM, ISO and DIN standard test methods. The autosorbiQ is a window for users to perform intelligent particle analysis.

autosorbiQ MP

  • Capable of measuring BET surface areas, mesopores and micropores
  • The system is a workhorse high vacuum physisorption analyzer

autosorb iQ XR

  • The instrument is loaded with a 0.1 torr transducer
  • The system is an extended range physisorption analyzer
  • Capable of performing difficult micropore analysis

autosorb iQ C-AG

  • Used for measuring BET surface area and active metal area
  • Performs dual-purpose physisorption and chemisorption analysis

autosorb iQ C-MP

  • Capable of analyzing BET surface and active metal area
  • Useful for examining the micropore size distribution
  • The system is a high vacuum physisorption and chemisorption analyzer

autosorbiQ C-XR

  • The instrument has been fitted with a 0.1 torr transducer
  • Capable of measuring difficult catalyst
  • Performs extended range physisorption and chemisorption analysis

Key Features

Active Coolant Level Control for Sensitivity, Accuracy and Reproducibility

Coolant level control tends to be crucial for physisorption analyzers to achieve precise and reproducible outcomes while handling evaporative coolants like liquid nitrogen.

Instead of depending on passive wicking systems or empirical corrections, the autosorbiQ series integrates a 90+ hour analysis Dewar, a responsive elevator and a coolant-level sensor, all in a state-of-the-art active coolant level control system that guarantees measurement with high sensitivity and accuracy 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 basis of precise analytical data. The system has four built-in degassing stations that provide access to analysis-quality levels of vacuum via a dedicated cold trap to guarantee proper preparedness of challenging microporous samples 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 Data Reduction Methods

The software comes with an extensive and peer-reviewed DFT technique library. These proprietary data reduction methods are drafted in association with academic collaborators such as the Quenched Solid Density Functional Theory (QSDFT) methods, capable of providing reliable and precise pore size distributions.

The autosorbiQ Series: Physisorption and Chemisorption Analyzers

Image Credit: Anton Paar GmbH

Analysis Flexibility and Adaptability

The autosorbiQ machines have been developed to be the most versatile, flexible and customizable physisorption and chemisorption analyzers that are commercially available. Users can upgrade to two or three analysis stations for up to two or three times the physisorption throughput.

Every additional analysis station comes with its dedicated transducer set, enabling optimal flexibility in analysis conditions with no compromise on performance or speed. The operations of the system can be added to deliver 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 

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