USP Designations 

USP Packing Materials

Columns

Particle Size (µm)

Pore Size (Å)

L1

Octadecyl silane chemically bonded to porous silica or ceramic micro-particles, 3 to 10 µm in diameter

ZORBAX Eclipse Plus C18
ZORBAX Eclipse XDB-C18
ZORBAX SB-C18
ZORBAX Rx-C18
ZORBAX Extend-C18
ZORBAX ODS
ZORBAX ODS Classic
LiChrosorb RP-18
LiChrospher RP-18
Purospher RP-18/-e
Superspher RP-18/-e
Nucleosil 100-5 C18

3.5, 5
3.5, 5
3.5, 5
3.5, 5
3, 5
5
5
5, 10
5
5
4
5

95
80, 300
80, 300
80, 300
120
70
70
100
100
100
100
100

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

N/A

L3

Porous silica particles, 5 to 10 µm in diameter

5
3.5, 5
5

70
80, 300
60

L4

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

Custom Order

L5

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

N/A

L6

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

N/A

L7

Octyl silane chemcially bonded to totally porous microsilica particles, 5 to 10 µm in diameter.

5
3.5, 5
3.5, 5
3.5, 5
3.5, 5
5
5
5

70
80
80, 300
80, 300
80, 300
100
100
60

L8

An essentailly monomolecular layer of aminopropyl-silane chemcially boneded to totally porous silica gel support, 10 µm in diameter.

ZORBAX NH₂
LiChrospher NH₂

5
5

70
100

L9

10 µm irregular, totally porous silica gel having a chemically bonded, strongly acidic cation-exchange coating.

5 spherical
6.5

300
300

L10

Nitrile groups chemically bonded to porous silica particles, 3 to 10 µm in diameter.

ZORBAX CN
ZORBAX SB-CN
ZORBAX Eclipse XDB-CN
LiChrospher CN

5
3.5, 5
3.5, 5
5

70
80, 300
80
100

L11

Phenyl groups chemically bonded to porous silica particles, 5 to 10 µm in diameter.

5
3.5, 5
3.5, 5

70
80
80

L12

Strong anion-exchange packing made by chemically bonding a quaternary amine to a solid silica spherical core, 30 to 5 µm in diameter

L13

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

5

70

L14

Silica gel 10 µm in diameter having a chemically bonded, strongly basic quaternary ammonium anion-exchange coating.

5
6.5

70
300

L15

Hexyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter

N/A

L16

Dimethyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.

N/A

L17

Strong cation exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11 µm in diameter.

N/A

L18

Amino and cyano groups chemically bonded to porous silica partices 5 to 10 µm in diameter.

N/A

L19

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

N/A

L20

Dihydroxypropane groups chemically bonded to porous silica particles, 3 to 10 µm in diameter

LiChrospher Diol

5

100

L21

A rigid, spherical styrene-divinylbenzene copolymer, 5 to 10 µm in diameter.

N/A

L22

A cation group resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size.

N/A

L23

An ion exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10 µm in size.

N/A

L24

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

N/A

L25

Packing having the capacity to separate compounds with a MW range from 100 to 5000 da (as determined by polyethylene oxide), applied to neutral, anionic and cationic water-soluable polymers.

L26

Butyl silane chemically bonded to totally porous silica particles, 5 to 10 µm in diameter.

N/A

L27

Porous silica particles, 30 to 50 µm diameter

L28

A multifunctional support, which consists of a high purity, 100Å, spherical silica substrate that has been bonded with anionic (amine) functionality in addition to conventional reversed-phase C8 functionality.

N/A

L29

Gamma alumina, reversed phase, low carbon percentage by weight, alumina-based polybutadiene spherical particles, 5µm diameter with a pore diameter of 80Å.

N/A

L30

Ethyl silane chemically bonded to a totally porous silica particle, 3 to 10 µm in diameter

N/A

L31

A strong anion-exchange resin-quaternary amine bonded on latex particles attached to a core of 8.5 µm macroporous particles having a pore size of 2000Å and consisting of ethylvinylbenzene cross-linked with 55% divinylbenzene.

N/A

L32

A chiral ligand-exchange packing- L-proline copper complex covanlently bonded to irregularly shaped silica particles, 5 to 10 µm in diameter.

N/A

L33

Packing having the capacity to separate proteins by molecular size over a range of 4,000 to 400,000 daltons. It is spherical, silica-based, and processed to provide pH stability.

4

150

L34

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

N/A

L35

A zirconium-stabilized spherical silica packing with a hydrophilic (diol-type) molecular monolayer bonded phase

ZORBAX GF-250
ZORBAX GF-450

4
6

150
300

L36

L-Phenylglycine-3, 5-dinitrobenzoyl on 5 µm amino propyl silica.

N/A

L37

Polymethacrylate gel packing having the capacity to separate proteins by molecular size over a range of 2,000–40,000Da MW

N/A

L38

Methacrylate-based size exclusion packing for water-solubles

N/A

L39

Hydrophilic polyhydroxymeth-acrylate gel of totally porous spherical resin

N/A

L40

Cellulose tris-3,5-dimethylphenylcarb-amate coated porous silica particles, 5 to 20 µm in diameter

N/A

L41

Immobilized alpha-acid glyco-protein on spherical silica particles, 5 µm in diameter

N/A

L42

Octlysiilane and octadecylsilane groups chemically bonded to porous silica particles

N/A

L43

Pentafluoropehnyl groups chemically bonded to silica particles 5 to 10 µm in diameter

N/A

L44

A multifunctional support, which consists of a high purity, 60Å spherical silica substrate, that has been bonded with a cationic exchanger, sulfonic acid functionality in addition to a conventional reversed phase C8 functionality.

N/A

L45

Beta cyclodextrin bonded to porous silica particles, 5 to 10 µm in diameter.

5

L46

Polystyrene/divinylbenzene substrate agglomerated with quarternary amine functionalized latex beads, 10µm in diameter.

N/A

L47

High capacity anion exchange microporous substrate, fully functionalized with a trimethyl-amine group, 8 µm in diameter.

N/A

L48

Sulfonated, cross-linked polystyrene with an outer layer of submicron, porous, anion-exchange microbeads, 15 µm in diameter.

N/A

L49

Amylose tris-3, 5-dimethylphenyl-carabamate-coated, porous, spherical, silica particles, 5 to 10 µm in diameter.

N/A

L50

A strong cation exchange resin made of porous silica with sulfopropyl groups, 5 to 10 µm in diameter.

5
5

300
300

L51

A reversed-phase packing made by coating a thin layer of polybutadiene on to spherical porous zirconia particles, 3 to 10 µm in diameter.

N/A

L52

Multifunction resin with reversed-phase retention and strong anion-exchange functionalities. The resin consists of ethylvinyl-benzene, 55% cross-linked with divinylbenzene copolymer, 3 to 15 µm in diameter, and a surface of not less than 350m²/g, substrate is coated with quarternary ammonium functionalized latex particles consisting of styrene cross-linked with divinylbenzene.

N/A

L53

An anion-exchange resin consisting of rigid, spherical styrene-divinylbenzene copolymer with trimethylammonium groups at a loading of about 2meq per g, 3 to 29 µm in diameter.

N/A

L54

Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the sodium form, about 7 to 11 µm in diameter.

N/A

L55

Weak cation-exchange resin consisting of ethylvinylbenzene, 55% cross-linked with divinyl-benzene copolyme, 3 to 15 µm in diameter. Substrate is surface grafted with carboxylic acide and/or phosphoric acid functionalized monomers. Capacity not less than 500 µeq/column.

N/A

L56

Propyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter

3.5, 5

80

L57

A chiral-recognition protein, ovomucoid, chemically bonded to silica particles, about 5 µm in diameter, with a pore size of 120Å

5

120