Micromeritics AccuPore

Precise through-pore characterization made simple

Capillary flow porometry for precise, reliable and direct bubble point and through pore size measurements across the widest sample range. Flexible and smart design with no complex setup.

Micromeritics AccuPore

Direct, reliable, versatile through-pore measurements made simple, from R&D to QC.

By measuring true through pores directly, without curve fitting or model assumptions, AccuPore delivers reproducible pore size distributions, accurate bubble point values, and meaningful mean flow pore sizes that translate directly to real-world performance in the right timescales. 

Its flexible pressure ramp and step modes allow researchers to rapidly screen new materials during development, while the same robust, standardized measurements ensure consistent, audit-ready quality control of membranes, filters, and separators in routine manufacturing environments.

Key features and benefits

  • ≤0.1% for known materials, ≤1% for largest pore and pore size, 2x more data points than the closest competitor and ASTM-compliant methodology ensures defensible data.

  • Built-in methods simplify setup and method development, and the intuitive Breeze™ interface makes it easy to get precise, operator-independent results – no curve fitting or complex image processing. Easy method transfer from R&D to QC and 100% remote operation streamlines your workflow.

  • Sample preparation takes <30 seconds, and Ramp Mode delivers up to 10× quicker scans – so you can accelerate full profiles when speed matters most.

  • Smart-automated gas source selection saves up to $90,000 (1,500 gas tanks) per year for labs running >50 samples/week, and the 2-in-1 ramp and step system saves costs on equipment, servicing, and consumables. Simplified operation cuts training and overhead costs.

Applications

Load any sample and get reliable data - no complex setup required.

Measure 13mm, 25mm, and 47mm-diameter samples within the same sample chamber, with no need for fixture swaps or recalibration. From delicate membranes to high strength separators, R&D to QC, AccuPore handles it all without needing expert-level setup or method development.

Versatility

Specification

Technology
Capillary flow porometry
ASTM F316
Analysis method
Pressure ramp
Pressure step
Pore size range 0.013 µm to 500 µm
Data resolution >1000 points, 20 Hz processing
Sample size 13 mm / 25 mm / 47 mm
Maximum pressure 500 psi (35 bar)
Maximum flow rate 200 L/min
Analysis gas supply Air or N2

High-resolution pore distributions without curve fitting

AccuPore’s pressure flow curves reflect actual pore architecture with >1000 data points per run, enabling true physical interpretation without curve fitting artifacts.

Precision

Accessories

Safety and support

Protect your team and your instrument’s uptime with our AccuPore’s unrivalled safety and support features. AccuPore is the only system offering full UL/CSA certification, ensuring risk-free operation, and you’ll also have access to Malvern Panalytical’s unique global network of service and support.

Our support network

FAQs

Porometry vs porosimetry: what is the difference?

Porometry and porosimetry are two different methods for analyzing porous materials. Porometry identifies through-pore diameters and flow traits like bubble point and permeability, whereas porosimetry (particularly mercury intrusion) measures total pore volume, density, and the size distribution of all connected pores.

Distinct in their approach, porometry characterizes through-pore size distribution and flow properties, whereas porosimetry (mercury intrusion) evaluates the total volume, density, and size distribution across all connected pores.

Why AccuPore?
  • Accurate, repeatable and direct measurements of bubble point and largest pore size
  • Best resolution of through-pore size distribution, with greatest sensitivity for smallest pores
  • Flexible by design: Smart switch of gas supply for the widest dynamic pressure range in a single instrument. AccuPore handles diverse sample types and sizes, and it also allows customizable test routines
  • Intuitive software enables easy and quick setup for accurate measurements without complexity
What industries can benefit the most from using an AccuPore?

Any industry that needs to control, measure, or validate through-pore size distribution, flow, and bubble pointy can benefit from AccuPore—especially where product safety, performance, and consistency are critical.

  • Advanced materials & membranes
  • Filtration & separation
  • Battery & energy
  • Textiles & non-wovens
  • Aerospace & defense
  • Automotive
  • Medical & pharmaceutical
  • Food & beverage
What is the difference between porosity and pore size distribution?

Porosity and pore size distribution describe different but complementary properties of a porous material. Porosity refers to the total amount of empty space within the material, usually expressed as a percentage, indicating how much fluid or gas it can hold overall. In contrast, pore size distribution describes the range and frequency of pore sizes present, showing whether the material has mostly small, large, or a mix of pores and how they are spread. While porosity tells you how much void space exists, pore size distribution tells you how that space is structured, which is crucial for determining how fluids flow through the material and what particle sizes can be filtered.

Experience industry-leading through-pore analysis, without the complexity.

AccuPore sets the standard for through-pore porosity analysis while streamlining your workflow, offering: 

  • Precise, repeatable largest pore (bubble point) measurements up to 3x faster than competitors 
  • A 2-in-1 system with step mode for ultimate precision and ramp mode for up to 10x faster analysis 
  • Better than 0.1% accuracy for known materials 
  • Smart-automated gas source selection that delivers up to $90,000 in cost savings for labs running >50 samples per week