Anton Paar Gas Sorption Analyzer
Model – Quadrasorb EVO

Used / Sold as is / Condition unknown / Untested / Specs based on model search / What is pictured is what is available

1 lot of 2

General Instrument Features
•Four completely independent analysis ports, each with its own dewar and dosing system
•Soft close protective door with pneumatic hinges; integrated dewar covers with belt-driven lift and coolant-level sensors
•Stainless steel gas pathways with metal-to-metal seals for optimal vacuum integrity
•Dedicated Po (saturation vapor pressure) transducer & manifold, enabling continuous dosing without pausing measurement
•BET “QuickMode™” speeds through analysis—up to 50% faster—allowing synchronous handling of samples
•Dose Wizard™ flexibility: use previous sample as dosing template; QuickMode gain option
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🔹 Performance Specifications
•Surface area range: from 0.01 m²/g to no upper limit (using N₂)
•Pore size range: approximately 0.35–400 nm
•Minimum relative pressure (P/P₀): down to 1 × 10⁻³ (nitrogen at 77 K)
•Total pore volume & average pore size calculations, along with adsorption/desorption isotherms
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🔹 Micropore / Krypton Option
• Optional configuration adds a 1 torr low-pressure transducer and turbo pump, enabling Krypton analysis for microporous materials and very low surface area samples
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🔹 Sample Handling & Throughput
•Sample types: powders and porous solids, prepared by vacuum degassing (helium or nitrogen) before analysis
•Can run up to four samples in parallel, with staggered start times
•Microwave degassing capability up to 350 °C
(as implemented in similar systems like UCL's Autosorb IQ).
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🔹 Data & Software
•Provides adsorption/desorption isotherms, multi- and single-point BET surface area, mesopore size distributions, total pore volume, and average pore size
•Operated via QuadraWin software with guided setup, analysis, graphing, and reporting
•Includes advanced data reduction methods such as Quenched Solid Density Functional Theory (QSDFT) for reliable pore size distributions


Quantachrome Instruments
Analyzer Surface Area Pore Size
Model – Quadrasorb SI

General Features
•Purpose: Measures surface area, pore volume, and pore size distribution using gas adsorption techniques (BET, BJH methods).
•Analysis Ports: Up to four independent stations for simultaneous measurements.
•Measurement Techniques:
Patented NOVA helium-free method
Classical helium void-volume method

•Adsorbates: Nitrogen, argon, carbon dioxide, krypton, and other non-corrosive gases.
•Software: Windows®-based QuadraWin™ for instrument control and data analysis

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Performance Specifications
•Surface Area Range:
Nitrogen: 0.01 m²/g to no upper limit
Krypton (KR/MP model): 0.005 m²/g to no upper limit

• Pore Size Range:
3.5 ∠st; to >4000 ∠st; (0.35 nm to >400 nm)

•Minimum Pore Volume:
Liquid: 2 × 10⁻⁶ cc/g
STP: 0.0001 cc/g

•Pressure Resolution:
0.016 torr (1000 torr range)
0.000016 torr (1 torr range for KR/MP model)

•Ultimate Vacuum:
Standard: <1 × 10⁻² torr
KR/MP model: <1 × 10⁻⁹ torr with turbomolecular pump

•Coolant Control: Automatic level sensor for Dewar flasks

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Special Options
•KR/MP Model: For low surface area and micropore measurements, includes low-pressure sensor and turbo-molecular vacuum pump

•Gas Dosing Methods:
MaxiDose™ (adaptive dosing)
Constant Dose Volume (0.1–10 cc per point)
Delta Volume™ (adds points in high uptake regions)
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Applications
•Catalysts, ceramics, pharmaceuticals, powdered metals, zeolites, activated carbons, molecular sieves, and other porous materials.