Food / Drugs Surface Area and Pore Size Analyzers
Last Updated: April 1, 2025
Description
Surface area and pore size analyzers are specialized instruments used to measure various characteristics of solid samples, including pore distribution, pore volume, specific surface area, and total surface area. These analyzers provide critical data by determining the frequency and volume of pores within a sample, as well as the surface area available for adsorption.
Working Principle
Surface area and pore size analyzers operate by first preparing the solid sample through a process of heat, vacuum, and/or flowing gas to remove any adsorbed contaminants. The sample is then cooled to cryogenic temperatures under vacuum conditions. An adsorptive gas, typically nitrogen, is introduced in controlled increments. The pressure within the analyzer is allowed to equilibrate after each dose, and the quantity of gas adsorbed is calculated. This process defines an adsorption isotherm, which is used to determine the quantity of gas required to form a monolayer over the sample's surface and pores. By knowing the area covered by each adsorbed gas molecule, the total surface area can be calculated .
Applications
Surface area and pore size analyzers are used in various industries, including pharmaceuticals, where they help in characterizing the surface properties of drug particles, which can affect dissolution rates and bioavailability. They are also used in the food industry to analyze the texture and quality of food products by examining their pore structures.
Advantages over other Surface Area and Pore Size Analyzers
These analyzers offer precise measurements of both strong and weak interactions in samples, which can be critical for applications requiring detailed surface characterization. The ability to automatically determine active metal surface area and percent metal dispersion for catalyst materials is another advantage, providing comprehensive data for catalyst development and optimization .
Limitations
One limitation of surface area and pore size analyzers is the potential for frequent fouling, which can affect the accuracy and reliability of measurements. Additionally, the initial capital expense for these instruments can be significant, which may be a barrier for smaller laboratories or companies .
Considerations
When considering the purchase and use of surface area and pore size analyzers, it is important to account for the initial costs, which can be high. Operating expenses, including the cost of gases and maintenance, should also be considered. The durability and accuracy of the instruments are generally high, but regular maintenance is required to ensure consistent performance. Replacement parts and service costs should be factored into the overall cost of ownership .
from Quantachrome Instruments
Water sorption behavior plays an important role in the development and use of many common and advanced materials. Some examples include: Stability of pharmaceutical excipients and drug actives. Drying and storage of grains. Texture and shelf life of food products. PEM fuel cell components. Mortar,... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Concrete/Mortar; Food / Beverage; Powders; Textiles
- Display & Special Features: Benchtop or Laboratory
- Properties Analyzed: Pore Volume or Porosimetry
from Micromeritics
High Performance in a Compact Footprint. Accurate and precise surface area and porosimetry measurements are essential to the determination of the effectiveness and quality of a wide variety of materials. The Micromeritics ASAP 2020 integrates multiple gas sorption techniques into a single,... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Chemicals; Food / Beverage; Metals; Powders; Catalyst
- Methods, Technology & Standards: Gas Sorption Technique
- Properties Analyzed: Pore Volume or Porosimetry; Specific Surface Area
- Display & Special Features: Benchtop or Laboratory; PC Interface / Networkable
from Quantachrome Instruments
NOVAtouch ™ Series. High Speed Surface Area and Pore Size Analyzer. Introducing the Next Generation of NOVA Analyzers. Now with Advanced Touchscreen and Higher Throughput Capabilities. The NOVAtouch ™ provides the next generation of NOVA analyzer performance and features. It delivers... [See More]
- Test Media: Ceramics; Food / Beverage; Foam / Porous Materials; Metals; Powders; Soil
- Display & Special Features: Benchtop or Laboratory; PC Interface / Networkable; Video
- Properties Analyzed: Pore Distribution; Pore Volume or Porosimetry; Total Surface Area
from Micromeritics
Micromeritics ASAP ® 2420 Accelerated Surface Area and Porosimetry System uses the gas sorption technique to generate high-quality data for applications that require high performance/high sample throughput. Standard features include six independently operated analysis ports and a programmable... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Chemicals; Food / Beverage; Geological (Rock, Strata, etc.); Metals; Powders; Catalyst
- Methods, Technology & Standards: Gas Sorption Technique
- Properties Analyzed: Pore Volume or Porosimetry; Specific Surface Area
- Display & Special Features: Benchtop or Laboratory; PC Interface / Networkable
from Micromeritics
The ASAP 2020 Plus Chemisorption option [ermits you to obtain valuable information about the physical and chemical properties of your catalyst, catalyst support, adsorbents, and other materials. It's unique design provides a high level of system cleanliness to permit low-pressure checmisorption... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Food / Beverage; Fuel / Fuel Materials; Powders; Catalyst
- Pore Diameter Range: 3.5 to 30
- Properties Analyzed: Pore Volume or Porosimetry; Specific Surface Area
- Methods, Technology & Standards: Multiple Gas Sorbtion Techniques
from Micromeritics
he 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... [See More]
- Test Media: Building & Construction Materials; Ceramics; Chemicals; Concrete/Mortar; Food / Beverage; Foam / Porous Materials; Geological (Rock, Strata, etc.); Metals; Powders; Catalyst
- Pore Diameter Range: 30 to 1.10E7
- Properties Analyzed: Pore Size or Densometry
- Methods, Technology & Standards: Mercury Porosimetry
from Micromeritics
The ASAP 2460 Surface Area and Porosity Analyzer incorporates a unique expandable system designed for high-performance and high sample throughput. The base ASAP 2460 is a two-port master control unit. For more throughput, additional two-port units can be connected to the master unit expanding the... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Chemicals; Food / Beverage; Geological (Rock, Strata, etc.); Metals; Powders; Catalyst
- Methods, Technology & Standards: Gas Sorption Technique
- Properties Analyzed: Pore Volume or Porosimetry; Specific Surface Area
- Display & Special Features: Benchtop or Laboratory; PC Interface / Networkable
from Micromeritics
Micromeritics' TriStar II PLUS is a state-of-the-art instrument suited for use in both quality control and research .environments. Intended for laboratories that require high throughput and the highest quality data, it contains all the capabilities of the TriStar II with additional hardware and... [See More]
- Test Media: Adhesives/Sealants; Ceramics; Food / Beverage; Foam / Porous Materials; Geological (Rock, Strata, etc.); Powders; Catalyst
- Methods, Technology & Standards: Flowing Gas Method
- Properties Analyzed: Pore Volume or Porosimetry; Specific Surface Area; Total Surface Area
- Display & Special Features: Benchtop or Laboratory; PC Interface / Networkable; SPC Software or Capability