Surface area analyzer is used for surface area measurement. Surface Area is an Intrinsic property of powdered porous materials that can reveal important information regarding the usefulness of a material for an application, Surface area plays critical role in the bio-availability of Pharmaceuticals, dispersion of dyes, adsorption capacity of carbon and many more.
By means of Physical adsorption. Surface Area can be calculated since physically adsorbed molecules are not restricted to specific sites and are free to cover the entire Surface. This process is reversible. Typically nitrogen gas is adsorbed at cryogenic temperatures (liquid nitrogen). Based on the amount of gas adsorbed (adsorbate) at a given pressure, the BET equation is used to calculate the number of adsorbed gas molecules that would be required to form a mono layer on the surface. With knowledge of the cross - sectional area of the gas molecule adsorbed, the Surface Area can be easily calculated.
Smart Sorb 93, Surface Area Analyser is based on dynamic BET principle. Nitrogen gas is used for adsorption. The dynamic flow method uses a high sensitive thermal conductivity detector to measure the change in the concentration of an adsorbate / carrier gas mixture during adsorption or desorption process. It determines the surface area at single point and it can be enhanced for measuring multi point surface area and total pore volume analysis with different gas mixture percentage. The user-friendly software stores the data and computes the final surface area value. On line adsorption, desorption curves are displayed on the screen.
Specifications :
- Surface Area range - 0.1 m2/gm to 1500 m2/gm -Normal. Extendable up to 2500 m2/gm.
- Accuracy - Typically better than ± 5%
- Reproducibility - Typically better than 3%
- Sample Holder - Typical Sample holder capacity 7 ml Bigger sizes are available
- Dimensions - 45 cm (L) 25cm (B) x 35 cm (H)
- Weight - 10 Kg.
- Electrical - 230 V AC, 50 HZ
- Regeneration System -
- Temperature Range : Ambient to 300°C
- Accuracy: Better than ± 5°C of Set Point
- Operating temperature - 15°C to 40°C (non condensing)
Features:
- Wide Range of Surface Area Measurement
- Easy to use with direct display of Surface Area after completion of analysis on computer
- High Speed Analysis - within 10-15 minutes
- Meets USP-24, EP/BP, ASTM D- 3037, ISO S4652, IS 877 and 2752 standards
- High Accuracy and Reproducibility
- Built in micro-controller permits to use the instrument in manual mode
- Utilizes a modified BET equation for Single Point Surface Area determination
- Ultra stable detector eliminates drift and need for constant readjustment
- Separate regenerating system for sample preparation is provided which degas three samples at a time
- Total pore volume and multi point Surface Area determination is possible with additional gas mixtures
- Surface area range selection for Low Surface Area to High Surface Area
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