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Flow Chemisorption Analyzer:
Autosorb 3300

Automated pulse chemisorption and TPR/TPO/TPD measurements
Ultra-sensitive chemisorption analyzer with four-filament TCD
Precision gas blending for up to 36 mixtures
Safe-touch furnace for temperatures up to 1,200 °C
Four integrated precision titration loops for repeatable injections

Autosorb 3300

Key features
Specifications
Similar products

The Autosorb 3300 chemisorption analyzer delivers fully automated characterization of catalysts, enabling essential measurements to be performed reliably, quickly, and with exceptional ease of use. Its intuitive, ergonomic interface streamlines operation, while a liquid-cooled furnace ensures safe performance at temperatures up to 1,200 °C. Measurement modes include TPR, TPO, TPD, TPSR, acid and basic site analysis, and pulse titration for active metal area and dispersion. Four integrated titration loops simplify method optimization, and a robust four-filament TCD provides high sensitivity and durability. With 12 gas inputs and two mass flow controllers, the system can generate up to 36 gas mixtures for maximum flexibility.

Key features

Essential chemisorption done right: No guesswork, no hassle

This chemisorption analyzer redefines simplicity with a workflow that eliminates nearly every manual action. From automatic cell connection and leak checking to fully automated furnace positioning and loop selection, the instrument removes the need for hands-on adjustments. Operators simply place the sample cell assembly into the furnace and press start – nothing more. This radical reduction in touchpoints accelerates training, reduces user to user variability, and keeps your lab moving efficiently without constant operator oversight.

Lab technician loading a sample into the Anton Paar Autosorb 3300, with measurement graphs shown on a monitor

Lowest operating costs in its class

Designed to deliver confident results in both R&D and QA/QC environments, Autosorb 3300 significantly reduces cost per analysis by eliminating unnecessary consumables and reducing gas usage. Built in gas blending drastically cuts the number of required cylinders and regulators. A regenerable zeolite vapor trap replaces liquid nitrogen cooling for TPR, and the instrument’s optimized flow paths ensure lower flow rates and faster gas exchange. With no septa, syringes, ferrules, or O rings to replace – and no compressed air needed for cooling – laboratories benefit from substantially lower recurring costs and fewer workflow interruptions.

Anton Paar Autosorb 3300 chemisorption analyzer with sample tube and holder on a plain light background

The same conditions, the same results: Precision every time

Reliable catalyst characterization depends on uncompromised repeatability. The Autosorb 3300 chemisorption analyzer delivers this automatically, with an integrated, pre calibrated loop system to provide true, temperature and pressure controlled injection volumes unaffected by environmental changes. The Autosorb 3300's high sensitivity current controlled four filament TCD ensures accurate detection across all temperature programmed methods. The instrument resolves small titration peaks and measures active areas down to 0.03 m² (H₂ on platinum at 313 K) for reliable catalyst characterization at very low metal loadings.

Anton Paar Autosorb 3300 chemisorption analyzer on a lab bench with a monitor showing measurement graphs

Thermal power that outpaces every legacy system

Autosorb 3300’s advanced thermal performance ensures both improved workflow and superior analytical clarity. It delivers rapid temperature ramps, reaching 800 °C at up to 100 °C/min, and even 1,200 °C at up to 25 °C/min. Fast cooldown to 50 °C in as little as 30 minutes further accelerates throughput without sacrificing safety. The chemisorption analyzer’s compact furnace design provides highly responsive temperature control, enabling linear temperature ramps, precise hold segments, and stable baselines critical for TPR, TPO, and TPD analysis.

Close-up of the Anton Paar Autosorb 3300 chemisorption analyzer with glass sample tube in the analysis station

Engineered for maximum safety

The Autosorb 3300 chemisorption analyzer is designed to provide controlled heating and cooling profiles for demanding chemisorption applications. Despite its high operating temperatures, the safe-touch design keeps the external surface within 34 °C of ambient to ensure operator safety during high-temperature experiments.

Gloved hand placing a glass sample tube in the Anton Paar Autosorb 3300 chemisorption analyzer

Powerful software for catalyst characterization

Autosorb 3300 is controlled by the workflow-oriented Kaomi React software to support consistent method execution. The software includes a method and sequence editor, real-time instrument visualization, and guided routines for pulse titration and peak deconvolution. Detailed reports for active metal area, dispersion, and other catalyst parameters are generated quickly and reproducibly.

Anton Paar Autosorb 3300 chemisorption analyzer beside a monitor showing TPR analysis graphs

Specifications

Applications
Petrochemical catalysts	Petroleum cracking, oxidation, hydrocarbon reforming, steam reforming, water-gas shift
Catalyst regeneration	Coked and sintered (used) catalysts
Hydrogen generation	Ammonia decomposition, electrolysis electrodes
Fuel cells	Redox electrodes
CO₂ capture and utilization	Solid bases (e.g., amine-functionalized, hydrogenation catalysts)

Performance Specifications
Measurement types	TPR, TPO, TPD, TPSR, pulse titration, breakthrough curves
Analysis types	Active metal area, dispersion, crystallite size, activation energy, acid site strength, quantitative desorption, peak fitting, and deconvolution
Injection repeatability	< 0.4 % of loop volume
Peak temperature reproducibility	< 0.8 % (Zeolite ammonia TPD)
Active area reproducibility	4 % (measured on 2 % platinum on alumina reference sample)

Technical Specifications
Furnace	Safe touch (surface temperature never more than 34 °C above ambient)
Sample temperature range	40 °C to 1,200 °C
Furnace heating rates	40 °C to 800 °C: Up to 100 °C/min 800 °C to 1,000 °C: Up to 50 °C/min 1,000 °C to 1,200 °C: Up to 25 °C/min
Minimum heating rate	0.08 °C/min
Furnace cooling type	Closed-circuit liquid circulation
Cooling rate	800 °C to 50 °C in 26 min, 500 °C to 50 °C in 22 min 400 °C to 50 °C in 20 min, 100 °C to 40 °C in 12 min
Detector	Four-filament W/Re TCD (ammonia- and oxidation-resistant) with bypass valve
Injector loops	4 integrated loops (145 μL, 275 μL, 525 μL, 1,125 μL nominal)
Gas blending	Built-in using two MFCs (50 sccm each)
Analysis/carrier gas inputs	6 (1 inert, 4 standard, 1 PFE)
Injector/blend gas inputs	6 (1 inert, 4 standard, 1 PFE)
Gas input compatibility	Inert: He, Ar, and other inert gases Standard: Inert + N₂, CO₂, CO, H₂, O₂, N₂O PFE: Standard + CH₄, NH₃
Heated valve box	50 °C (stability ±0.3 °C)
Sample cell	Quartz U-tube with 3 mL sample capacity, with bypass valve
Vapor trap	Standard dry absorber, with bypass valve
Accessories	Cold trap, mass spectrometer, vacuum pump
RoHS 3 compliant, CE certified	✓

Anton Paar Certified Service

Support throughout your instrument’s full lifecycle, wherever you are

Three-year standard warranty
Guaranteed original-parts and service support for at least 10 years after product discontinuation – plus ongoing lifecycle support
Instrument maintenance, verification, and optimization
Fast, reliable support from certified, factory-trained experts in 110+ countries

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