Micromeritics AutoPore V

Mesoporous and macroporous analysis

Leading performance for mesoporous and macroporous materials coupled with class-leading operational safety.

  • Widest range of measurable pore sizes: from as 3 nm to 1100 µm
  • High resolution analysis for macroporous and mesoporous materials in both intrusion and extrusion analyses
  • New enhancements focus on improving operator safety
  • Flexible method definition optimizes for speed or resolution as needed
  • Powerful, customizable reporting system produces actionable measurement outputs
  • Complies with the ASTM Methods D4284, D4404, and D6761, as well as ISO 15901-1 and USP <267>

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Overview

The mercury porosimetry analysis technique is based on the intrusion of mercury into a porous structure under stringently controlled pressures. Besides offering speed, accuracy, and a wide measurement range, mercury porosimetry permits you to calculate numerous sample properties such as pore size distributions, total pore volume, total pore surface area, median pore diameter and sample densities (bulk and skeletal).

The AutoPore V Series Mercury Porosimeters can determine a broader pore size distribution more quickly and accurately than other methods. This instrument also features enhanced safety features and offers new data reduction and reporting choices that provide more information about pore geometry and the fluid transport characteristics of your material.

Features

  • Triple fail safe - 2 interlocks on locking caps

    Verifies that the capacitance detector is installed on low-pressure port, automatically suspends run, and permits user to check filling of the penetrometer prior to run

  • Mercury collection trays

    Safe collection of mercury for disposal in the case of compromised penetrometer seals or operator error resulting in broken penetrometers

  • Improved mercury funnel design

    Attached screw cap and funnel-shaped opening eliminates mercury contamination and possible drip-spillage associated with separate detached filling funnel. Attached screw cap prevents loose cap and possible vapor release

  • Mercury vapor detection device

    Handheld device to check localized mercury vapor levels that exceed defined safety limits. Portable device allows point checks at the instrument or any location within the lab exposed to mercury

Safety features

  • Triple Fail Safe - 1 Penetrometer Safety Cap: In case of operator error, this device prevents the penetrometer or rod being released from port unintentionally
  • Triple Fail Safe - 3 System Pressure Vent on Manifold: Works in concert with Cap Interlock to automatically vent system pressure if above ambient pressure and error condition is detected
  • Software Control for Fine Powder Samples: Prevents fine powder from accidental aspiration into low-pressure ports during analysis by using intelligent evacuation controlled by sample type

Applications

Pharmaceuticals

Porosity and surface area play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as a drug’s useful shelf life, its dissolution rate, and bio-availability.

Ceramics

Pore area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods.

Adsorbents

Knowledge of pore area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes. Porosity and surface area characteristics determine the selectivity of an adsorbent.

Catalysts

The active surface area and pore structure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit, creating a selective catalyst that will produce primarily the desired product.

Aerospace

Surface area and porosity of heat shields and insulating materials affect weight and function.

Catalysts

Determine correct composition of catalyst supports and finished products including crystallinity, porosity, and formulation.

Fuel Cells

Fuel cell electrodes require controlled porosity with high surface area to produce adequate power density.

Geoscience

Porosity is important in groundwater hydrology and petroleum exploration because it relates to the quantity of fluid that a structure can contain as well as how much effort will be required to extract it.

Filtration

Pore size, pore volume, pore shape, and pore tortuosity are of interest to filter manufacturers. Often, pore shape has a more direct effect upon filtration than pore size because it strongly correlates with filtration performance and fouling.

Construction materials

Diffusion, permeability, and capillary flow play important roles in the degradation processes in concrete, cement, and other construction materials.

Paper

The porosity of print media coating is important in offset printing where it affects blistering, ink receptivity, and ink holdout.

Medical implants

Surface area and porosity of heat shields and insulating materials affect weight and function.

Specification

Measurement range Low pressure (all models):
0.2 to 50 psia (345 kPa)

High pressure:
9600/9605: From atmospheric pressure to 33,000 psia
9610/9620: From atmospheric pressure to 60,000 psia
Pore size range
Low pressure (all models):
1100* to 3.6 µm (*calculated with initial filling pressure of 0.2 psia)
 
High pressure:
9600/9605: 6 to 0.005 µm
9610/9620: 6 to 0.003 µm
Resolution
Low pressure (all models):
0.00025 psia
 
High pressure: 
9600/9605: 0.165 psia from 3,300 psia to 33,000 psia
9610/9620: 0.03 psia from atmospheric pressure to 60,000 psia
Transducer accuracy
Low pressure (all models): +/- 1% of full scale
 
High pressure: +/-0.1% of full scale
Transducer hysteresis
Low pressure (all models)
 
High pressure: 0.05% of full scale
Servo control precision
Low pressure (all models): 1% of target, min 0.05 psia, no overshoot
 
High pressure: 0.5% of target, min 5 psia, no overshoot
Intrusion resolution
Better than 0.1 all
Intrusion accuracy
+/- 1% of maximum penetrometer stem volume
Gas Consumption
Nitrogen or other clean, dry gas at 50 psig (345 kPa)

Accessories

Penetrometers (partial list)

Model#SizeStem volumeMediumTypical use
0115 cc0.392SolidRefractories, low-porosity solid rocks/cores, low porosity solid polymers
0215 cc0.392PowderLow-porosity powders, gravel, irregular rock shapes
0315 cc1.131SolidMedium-porosity rocks/cores, solid materials
0415 cc1.131PowderMedium-porosity rocks, solid materials, fumed silica
075 cc0.392SolidPaper, flexible polymer/membrane sheets, pharma tablets
085 cc0.392PowderSilicates, catalysts, powders (general use), pharma powders
095 cc1.131SolidMedium/high-porosity sheet-form materials (paper, polymer, etc.), pharma tablets
105 cc1.131PowderSilica-alumina, silicates, zeolites, catalysts, powders (general use), pharma powders
143 cc0.412PowderPowders (general use), materials with low quantity available
2415 cc3.263SolidHigh-porosity rock/cores, low-density/high-porosity foams
2515 cc4.185SolidHigh-porosity material with large volume

Operational advantages

  • Ability to measure pore diameters from 0.003 to 1100* µm *Calculated with an initial filling pressure of 0.2 psia (0.00128 MPa)
  • Controlled pressure can increase in increments as fine as 0.05 psia from 0.2 to 50 psia. This allows detailed data to be collected in the macropore region
  • High-resolution (sub-microliter) measurement of intrusion/extrusion volumes produces extraordinary precision allowing the development of tighter sample specifications, improved production processes, and high-quality research data
  • Operates in scanning and time- or rate-of-intrusion equilibrated modes
  • Real-time diagnostics provide knowledge of an issue before it becomes critical or impairs your analytical results
  • Collects extremely high-resolution data; better than 0.1 µL for mercury intrusion and extrusion volume
  • Improved linear motion for high-pressure chamber closure

Design advantages

  • Improved safety features reduce the risk of mercury spills and operator exposure
  • Available with four low- and two high-pressure ports for increased sample throughput
  • Available in 33,000 psia or 60,000 psia models
  • Low-noise, high-pressure generating system
  • A quick-scan mode allows a continuous pressure increase approximating equilibrium and providing faster screening
  • A choice of correction routine for baseline (automatic, differential, or manual) produces greater accuracy by correcting for compressibility and thermal effects caused by high pressure
  • Choice of pressure ramping methods lets you choose the scanning mode for high-speed or on-demand results, or equilibration mode for more accurate results with greater detail
  • Mercury temperature sensor allows automatic calculation of mercury density used for penetrometer calibrations
  • MicroActive software allows you to interactively manipulate data, define custom reports, and quickly achieve analytical results
  • Compensation for material compression under high-pressure analysis

Features and benefits

  • Provides rapid, detailed intrusion and extrusion analysis over a wide range of pore sizes
  • Nineteen standard penetrometer sizes and configurations allow analysis of a wide variety of sample sizes and shapes
  • New safety enhances set a new benchmark in operator safety
  • Scanning and equilibration modes of operation allow for rapid or more detailed analyses, respectively
  • MicroActive software allows for rapid modification of reporting ranges
  • Includes user-defined advanced reporting capabilities using Python scripts

Software

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Winning performance meets class-leading safety.

Winning performance meets class-leading safety.

Flexible method definition. Powerful reporting. Make detailed mesoporous and macroporous material analysis and reporting simple.

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