USP Listings

• L1 Octadecyl silane chemically bonded to porous or non-porous silica or ceramic micro-particles, 1.5 to 10 µm in diameter, or a monolithic rod.

• L2 Octadecyl silane chemically bonded to silica gel of a controlled surface porosity that has been bonded to a solid spherical core, 30 to 50 µm in diameter

• L3 Porous silica particles, 1.5 to 10 µm in diameter, or a monolithic silica rod.

• L4 Silica gel of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter

• L5 Alumina of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter

• L6 Strong cation-exchange packing-sulfonated fluorocarbon polymer coated on a solid spherical core, 30 to 50 µm in diameter

• L7 Octylsilane chemically bonded to totally or superficially porous silica particles, 1.5 to 10 µm in diameter, or a monolithic silica rod.

• L8 An essentially monomolecular layer of aminopropylsilane chemically bonded to totally porous silica gel support, 1.5 to 10 µm in diameter.

• L9 Irregular or spherical, totally porous silica gel having a chemically bonded, strongly acidic cation-exchange coating, 3 to 10 µm in diameter.

• L10 Nitrile groups chemically bonded to porous silica particles, 1.5 to 10 µm in diameter.

• L11 Phenyl groups chemically bonded to porous silica particles, 1.5 to 10 µm in diameter.

• L12 A strong anion-exchange packing made by chemically bonding a quartenary amine to a solid silica spherical core, 30 to 50 µm in diameter

• L13 Trimethylsilane chemically bonded to porous silica particles, 3 to 10 µm in diameter

• L14 Silica gel having a chemicallly bonded, strongly basic quaternary ammonium anion-exchange coating, 5 to 10 µm in diameter.

• L15 Hexylsilane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.

• L16 Dimethylsilane chemically bonded to porous silica particles, 5 to 10 µm in diameter.

• L17 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 6 to 12 µm in diameter.

• L18 Amino and cyano groups chemically bonded to porous silica particles, 3 to 10 µ in diameter.

• L19 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, about 9 µm in diameter.

• L20 Dihydroxypropane groups chemically bonded to porous silica or hybrid particles, 1.5 to 10 µm in diameter.

• L21 A rigid, spherical styrene-divinylbenzene copolymer, 3 to 10 µm in diameter.

• L22 A cation-exchange resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size.

• L23 An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quartenary ammonium groups, 7 - 12 µm in size.

• L24 A semi-rigid hydrophilic gel consisting of vinyl polymers with numerous hydroxyl groups in the matrix surface, 32 to 63 µm in diameter.

• L25 A Packing having the capacity to separate compounds with a molecular weight range from 100-5000 (as determined by polyethylene oxide), applied to neutral, anionic, and cationic water-soluble polymers. A polymethacrylate resin base, cross-linked with polyhydroxylated ether (surface contained some residual carboxyl functional groups) was found suitable.

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