Micromeritics ASAP 2425

Surface area and porosimetry system

  • High capacity surface area and porosity analysis
  • Six independently operated analysis ports
  • Twelve built-in degas stations

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A powerful combination: Micromeritics is a Malvern Panalytical company

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Overview

High performance and high sample throughput

The Micromeritics ASAP 2425 is a fully automated system engineered to deliver precise surface area and porosity measurements while supporting high sample throughput. Its integrated design combines advanced performance with flexible analysis and sample preparation in a single unit — ideal for laboratories seeking to scale operations efficiently.

Surface area and porosity are critical parameters that directly affect the behavior and quality of many products and materials. Reliable measurement and control of these characteristics is essential. These same properties are also key in evaluating the structure, formation, and usage potential of natural materials.

Features

The automated Micromeritics ASAP 2425 surface area and porosimetry system is designed to help busy laboratories expand their workflow while providing highly accurate and precise surface area and porosimetry data. High performance, versatile analysis, and sample preparation systems are included in the same instrument.

  • Fully automated operation: enables streamlined, unattended surface area and porosity analyses
  • High throughput performance: six independent analysis stations allow simultaneous, asynchronous sample runs
  • Dedicated transducers: each port features individual analysis and Po pressure transducers for precise measurement and control
  • Twelve independent degas stations: maximize sample preparation efficiency with individually programmable degas ports
  • Precise evacuation control: servo-regulated valve ensures accurate and consistent evacuation rates
  • Rapid BET analysis: complete six parallel BET surface area measurements in as little as one hour
  • Flexible dosing control: choose between maximum volume dosing or pressure-range-specific dosing for optimized analysis
  • Customizable temperature settings: input or automatically calculate analysis temperatures for greater flexibility
  • Advanced equilibration options: set different equilibration times for various regions of the isotherm to improve data accuracy
  • Low surface area capability: optional krypton-based measurement system supports analysis of extremely low surface areas with five dedicated ports
  • Six independent analysis stations

  • Sample tube with Isothermal Jacket

  • Long-life Dewars

  • Po tube with Isothermal Jacket provides continuous Po reading

  • Twelve degassing stations

  • Independently controlled heating mantles

Applications

Surface area and porosity are critical factors in pharmaceutical manufacturing, influencing product purification, blending, tableting, packaging, and ultimately impacting shelf life, dissolution rates, and bioavailability.

In ceramics, these properties affect how greenware cures and bonds, shaping the final product’s strength, texture, and density. For glazes and frits, surface area plays a role in preventing shrinkage, crazing, and crawling.

Industrial adsorbents rely on precise knowledge of surface area, pore volume, and pore size distribution for quality control and for fine-tuning separation processes, with porosity affecting selectivity.

Tight control over porosity and surface area is essential in systems like automotive vapor recovery, paint solvent reclamation, and wastewater pollution mitigation.

The durability, grip, and overall performance of tires are closely tied to the surface area of the carbon black materials they contain.

Catalytic efficiency depends on active surface area and defined pore structure — restricting pore size helps selectively target desired molecular reactions.

In coatings and printing, pigment or filler surface area influences appearance, gloss, and adhesion, while media porosity affects ink absorption and blistering.

Propellant burn rate is governed by surface area — too high can be hazardous; too low may cause poor ignition or erratic performance.

Artificial bone integration relies on engineered porosity that mimics natural bone and supports tissue growth.

Supercapacitors benefit from materials with high surface area and tailored porosity, which improve charge storage while conserving expensive raw inputs.

In cosmetics, surface area often serves as a particle size proxy when powder agglomeration complicates direct sizing.

Heat shields and insulators depend on optimized surface area and porosity to balance weight and functionality.

In geosciences, porosity impacts groundwater flow and petroleum extraction by determining fluid capacity and recovery effort.

Hydrogen storage in nanotubes is estimated using their surface area and microporous structure.

Fuel cell electrodes require high-surface-area materials with controlled pore networks to reach peak power density.

Specification

Electrical

Voltage 100/115/230 VAC (± 10%)
Frequency 50 or 60 Hz
Power 800 VA, exclusive of vacuum pumps, which are powered separately

Environment

Temperature
10 to 30 °C operating,
-10 to 55 °C storage or shipping
Humidity Up to 90% relative (non-condensing) for instrument

Capacity

Analysis 6 sample ports, each with a constantly monitored saturation pressure port
Degas 12 degas ports, each with independently controlled heating mantle

Analysis System

Manifold temperature transducer Type: Platinum resistance device (RTD) Accuracy: ±0.10 °C by keyboard entry Stability: ±0.10 °C per month
Manifold pressure transducer
Range: Vacuum to 950 mmHg
Operating: 1000 mmHg maximum
10 mmHg added for krypton option, 1 mmHg for micropore option
Resolution:
1000 mmHg Transducer: 0.01 mmHg
10 mmHg Transducer: 0.0001 mm
1 mmHg Transducer: 0.00001 mmAccuracy:
1000 mmHg Transducer: within 0.1% FS
10 mmHg Transducer1: within 0.15% of reading
1 mmHg Transducer2: within within 0.12% of reading
Sample and Po port transducers Range: 0 to 950 mmHg
Resolution: 0.01 mmHg
Accuracy: ±0.1% Full Scale
Vacuum control
Type: Thermocouple
Range: 0.001 to 1 mmHg

Physical

Dimensions (W, D, H) 103 x 51 x 159 cm
Weight
160 kg

Vacuum system

Nitrogen unit 2 oil-based pumps: 1 analysis, 1 degas
4 pumps (optional): 2 oil-free (1 analysis, 1 degas), 2 high vacuum (1 analysis, 1 degas)
Krypton Unit
Oil-based mechanical pump: 5 x 10-3 mmHg ultimate vacuum
Oil-free and high vacuum pump: 3.8 x 10-9 mmHg ultimate vacuum

Degas system

Capacity 12 degas ports
Vacuum control
Selectable target pressure controls switchover from restricted to unrestricted evacuation
Evacuation rate
Selectable evacuation rate from 1.0 to 50.0 mmHg/s
Manifold pressure transducer
Range: 0 to 950 mmHg
Resolution: 0.01 mmHg
Accuracy: ±0.1% Full Scale
Vacuum transducer
Type: Thermocouple
Range: 0.001 to 1 mmHg
Titled backfill gas
User-selectable at dedicated port, typically nitrogen or helium
Temperature control range
Temperature Range: Ambient to 450 °C (Programmable)
Temperature Control: 1 ramp during evacuation phase, 5 additional selectable ramps during heating phase
Selection: Digitally set, 1 °C increments from computer
Accuracy: Deviation less than ±10 °C of set point at the sensing thermocouple embedded in the heating mantle

Accessories

LN2 Transfer System

Specifically developed for conveniently filling Dewars for gas adsorption instruments, but also can be used for other cryogen applications.

Sample preparation options

The ASAP 2425 system includes twelve automatically controlled sample preparation ports that operate independently. Samples may be added or removed from degas ports without disturbing the treatment of other samples undergoing preparation.

The sample preparation system is fully automated with controlled heating time profiles. Temperature and ramp rate can be set and monitored individually and controlled from a few degrees above ambient to 450 °C. The temperature hold period may extend past the point when evacuation is completed.

A programmable pressure threshold can suspend the temperature ramp if the outgassing pressure exceeds the limit specified, preventing destructive steaming or other undesired reactions with residual gasses and vapors.

Analysis system

  • Six independent analysis ports: run new samples immediately after a previous run completes, maximizing throughput
  • Stable thermal environment: long-duration Dewars and Isothermal Jackets maintain consistent temperature profiles for accurate, extended analyses
  • High-resolution isotherms: high-capacity dewar supports unattended, high-resolution adsorption/desorption studies with precise equilibration
  • Fast parallel BET analysis: achieve six simultaneous BET surface area measurements in as little as one hour
  • Low surface area capability: Krypton option, equipped with 10 mmHg transducer, measures areas as low as 0.5 m² utilizing five of the six available ports
  • Micropore analysis: micropore option includes a 1 mmHg transducer to extend low-pressure measurement capabilities necessary to characterize micropores
  • Advanced software integration: MicroActive software enables interactive isotherm analysis with user-defined reporting and multiple modeling options (BET, Langmuir, DFT, NLDFT)
  • Multi-gas flexibility: connect up to five adsorptives and one free space gas simultaneously
  • Efficient pressure control: servo-controlled dosing and evacuation minimize analysis time while enhancing precision

Low surface area measurement (Krypton) and micropore options

The ASAP 2425 is also available in configurations tailored for specific applications, including low surface area krypton analysis and micropore measurements.

The krypton model features a 10 mmHg pressure transducer, making it ideal for accurately quantifying very low surface area materials, even those under 1 m²/g.

The micropore option incorporates a 1 mmHg transducer, which enhances low-pressure sensitivity and significantly improves the accuracy of microporous structure analysis by offering greater pressure resolution in the relevant range.

Software: superior data presentation capability

Innovative MicroActive Software

Micromeritics’ MicroActive software delivers an intuitive platform for hands-on evaluation of isotherm data.

Users can seamlessly adjust the data range by including or excluding specific points using movable, on-screen calculation bars.

The software also supports both linear and logarithmic views for flexible visualization of isotherms.

  • Direct interaction with adsorption data updates calculated properties instantly via draggable calculation bars
  • Fewer pop-ups and dialog boxes make it easier to adjust parameters and perform calculations in real time
  • Overlay and compare up to 25 datasets, including mercury intrusion results, using intuitive add/subtract tools
  • Flexible, user-defined data ranges enable direct modeling with BET, Langmuir, t-Plot, DFT, and other methods
  • The built-in Report Options editor lets users preview, customize, and export reports with summary and graphical outputs

Interactive reports

Interactive Reports for the ASAP 2425 include the following (where relevant to performed analysis):

  • Isotherm
  • BET Surface Area
  • Langmuir Surface Area
  • t-Plot
  • Alpha-S Method
  • BJH Adsorption and Desorption
  • Dollimore-Heal Adsorption and Desorption
  • Horvath-Kawazoe
  • Saito-Foley
  • Cheng-Yang
  • MP-Method
  • DFT Pore Size and Surface Energy
  • Dubinin-RadushkevichDubinin-Astakhov
  • NLDFT Advanced Reports
  • User-Defined Reports

User manuals

Please contact support for the latest user manuals.

Software downloads

Please contact support for the latest software version.

Simplifying surface area.

Simplifying surface area.

Combining porosimetry and surface area analysis, the ASAP 2425 is the ideal match for high capacity requirements.

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