| Alumina by being amphoteric (acting either as a base or an acid as well as being configured as neutral) provides the chromatographer the ability to separate a multitude of compounds over and above silica gels. Alumina can act as a weak ion exchanger demonstrating anionic or cationic properties while additionally acting as an adsorbent. Alumina due to its unique biological characteristics is a special sorbent for use in separation sciences. Activity: Super Activity I Standard (Std) Activity I - IV pH: Acid (A) Basic (B) Neutral (N) Stepless Deactivation behavior Constant Deactivation behavior Controlled Chromatographic Parameters Controlled Surface Area, Porosity Super I Super Activity I Aluminas are unique as DAI's products; they demonstrate approximately twice the capacity as compared to Standard Activity l; Surface modifications available are "A" (Acid), "B" (Basic), and "N" (Neutral). Super Activity I Aluminas constitute the starting material for the Dynamic Adsorbents line of Aluminas. Therefore, it is easy to change between various modes of chromatography. A special feature of Super Activity I is absolutely constant deactivation behavior valid for the deactivation process as well as when in contact with the chromatographic solvent. Standard Activity I Alumina Standard Activity I is available with various surface modifications to facilitate the separation of a wide range of compounds. In addition to pH the activity of the surface of alumina can mediate the separation. It is simple to adjust the activity by adjusting the water content of the material. (Alternatively other polar media can replace water) • Use high activity Alumina (Std Act I, Super Act l) for the separation of polar samples in nonpolar solvent systems and for the purification of solvents. (see next page)... • Use lower activity Alumina for less polar samples. DCC Alumina DCC - Dry column chromatography is a versatile Prep LC method that bridges the gap between analytical TLC and preparative column chromatography. (Request DCC Application Guide) ‘Flash” Alumina Flash Chromatography is a rapid Prep LC technique that facilitates the separation of 0.1 - 10 g of material via simple economical laboratory protocols. (Request “Flash” Application Guide) Activity II, III Alumina II - III sorbents are economical adsorbents of medium activity. Use this material for general purpose scouting and in cases where the use of carbon black is precluded due to its organic nature. Also, use Alumina II - III as a replacement for organic/polymeric ion exchangers, especially when it is necessary to overcome temperature and radiation cleavage problems. Alumina C (for PCB Removal) Alumina C is a chemically and physically modified Alumina for the analysis and removal of PCB’s. This material will find wide use and application in/for: Analysis Environmental Clean-Up Solvent Purification Electric Utilities: Transformer Oil Soil, Water Studies (Request the Alumina Environmental Product Bulletin for other environmental applications) Alumina P for Pyrogen Removal This material was developed specifically for the removal of Pyrogens in solution. Pyrogens are typically complex carbohydrates which preferentially adsorb to Alumina P. Ideal for antibiotic production and other types of bio-technology products. Alumina R Alumina R is an Alumina which is used for purifying, separatiing, and product formulations in the radio-active field; used for the production of various generators where one isotope is retained while the other is eluted. Mainly its improved exchange properties and the constant elution behavior will contribute to its reliability. Alumina for Dioxin Analysis AL 5788 has been developed for doing dioxin analysis. It is a 50-200 micron particle. Alumina for Solvent Purification Alumina is an ideal media for many solvent clean-up applications. ALUMINA for Pilot and Process Based on DAI's expertise, Aluminas can be produced according to customer’s specifications. They are used for batch processes as well as for production size chromatography. Please request information and technical assistance. |
DRYSPHERE™ Drysphere™ is new high technology, Dust free, spherical activated Alumina manufactured and designed to optimize desiccant performance. Request the Drysphere™ Product Bulletin. AL 2000 - For Removal of Lead from Water AL 2000 is a large particle (+200 micron) specially modified, chemically treated Alumina that has been designed for the removal of metal ions, especially dissolved lead and other cations from water. Request the AL 2000 Product Bulletin. AL 2100 - Scavenger Alumina for Process Clean-up Scavenger Activated Alumina is used for process scale removal of impurities. Its high macroporosity improves diffusion rates and the high surface area provides enhanced capacity. Typical Applications Removal of peroxides from hydrocarbons and ethers Peroxide adsorption from solvents for ultraviolet spectroscopy Dehydration of organic solvents with superactive adsorbents Removal of alcohol from chloroform Purification of organic solvents for optical purposes Purification of hydrocarbons and silicone oil for UV spectroscopy AL 2300 - For Bio-Mass Clean-up AL 2300 is designed for removing bio-mass in nutraceutical or natural product purification. AL 5000 for Removal of LEAD and other Heavy Metals from Water AL 5000 is a +50 micron spheriodal Alumina that can readily remove Lead and other heavy metals from Water. Metal Cation selectivity is Fe III> Cr III> Al III> Pb> Ag II> Zn II> Co II> Cd II. AL 5005 for Decolorization AL 5005 is a 50 micron spheroidal, macroporous high surface area, high performance Alumina for the removal of color, dyes and clean-up of water. AL 5500 for Arsenic Removal from Water AL 5500 is a specific macropore designed for the removal of arsenic from water or air vapor. Ideal for run-off water contaminated with arsenic. AL 5900 Activated Wide-Pore Aluminas Wide-Pore aluminas are available in various pore sizes up to a macropore of 1000Å . Ideal for biotechnology, environmental, and petroleum uses. |
