LN2 Transfer System
Specifically developed for conveniently filling Dewars for gas adsorption instruments, but also can be used for other cryogen applications.
Overview
Surface area and porosity are important physical properties that influence the quality and utility of many materials and products. Therefore it is critical that these characteristics be accurately determined and controlled. Similarly, knowledge of surface area and especially porosity are important properties in understanding the formation, structure, and potential application of many natural materials.
High performance and high sample throughput
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.
ASAP 2460 features
The Micromeritics ASAP 2460 surface area and porosimetry 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 auxiliary units can be connected to the master unit expanding the system to either a four-port or six-port analyzer.
- Fully automated modular system optimized for walkup sample screening
- High throughput with two, four, or six independent analysis stations
- BET surface area measurements in as little as 30 minutes
- Dosing options of maximum volume increment or dosing over specified pressure ranges
- Analysis temperature can be entered or calculated
- Equilibration option allows user to specify equilibration times for different parts of the isotherm
- Low surface area and micropore options
- Innovative MicroActive software with advanced NLDFT modeling
- State-of-the-art engineering ensures excellent accuracy, repeatability, and reproducibility from all ports, from the master control unit through one or two auxiliary analysis units
ASAP 2425 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 analyses
- High throughput with six independent analysis stations
- Each analysis port has a dedicated analysis and Po pressure transducer
- Twelve independently controlled degas ports
- Evacuation rate precisely regulated by a servo valve
- BET surface area measurements in as little as 1 hour
- Dosing options of maximum volume increment or dosing over specified pressure ranges
- Entered or calculated analysis temperature
- Equilibration option allows user to specify equilibration times for different parts of the isotherm
- Low surface area option with five independent analysis ports
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Six independent analysis stations
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Sample tube with Isothermal Jacket
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Long-life Dewars
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Po tube with Isothermal Jacket provides continuous Po reading
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Twelve degassing stations
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Independently controlled heating mantles
Applications
Surface area and porosity play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as their useful shelf life, dissolution rate, and bioavailability.
Surface area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods. The surface area of glazes and glass frits affects shrinkage, crazing, and crawling.
Knowledge of surface area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes. Surface area and porosity characteristics affect the selectivity of an adsorbent.
Surface area and porosity must be optimized within narrow ranges to accomplish gasoline vapor recovery in automobiles, solvent recovery in painting operations, or pollution controls in waste-water management.
The wear lifetime, traction, and performance of tires are related to the surface area of carbon blacks used in their production.
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.
The surface area of a pigment or filler influences the gloss, texture, color, color saturation, brightness, solids content, and film adhesion properties. The porosity of a print media coating is important in offset printing where it affects blistering, ink receptivity, and ink holdout.
The burn rate of propellants is a function of surface area. Too high a rate can be dangerous; too low a rate can cause malfunction and inaccuracy.
Controlling the porosity of artificial bone allows it to imitate real bone that the body will accept and allow tissue to be grown around it.
By selecting high surface area material with carefully designed pore networks, manufacturers of super-capacitors can minimize the use of costly raw materials while providing more exposed surface area for storage of charge.
Surface area is often used by cosmetic manufacturers as a predictor of particle size when agglomeration tendencies of the fine powders make analysis with a particle-sizing instrument difficult.
Surface area and porosity of heat shields and insulating materials affect weight and function.
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.
Nanotube surface area and microporosity are used to predict the capacity of a material to store hydrogen.
Fuel cell electrodes require high surface area with controlled porosity to produce optimum power density.
