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Packed Column USP Phase and Support Cross-Reference Chart

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Table I:  Cross-reference a non-Restek packed column phase or support to an equivalent Restek packed column phase or support.

LIQUID PHASES USP Nomenclature Restek Equivalent

Notes

Dimethyl polysiloxane oil

G1

Rtx-1, Rt-2100, OV-101

 

100% Dimethylpolysiloxane gum, polydimethylsiloxane, or polymethylsiloxane

G2

 

Rtx-1, OV-1

 

 

50% Phenyl-50% methylpolysiloxane

G3

Rt-2250, OV-17

 

DEGS-PS

G4

DEGS

Diethylene glycol succinate polyester

3-Cyanopropylpolysiloxane

G5

Rt-2340

 

Trifluoropropylmethylpolysiloxane

G6

Rt-2401

 

50% 3-Cyanopropyl-50% phenylmethylsilicone

G7

Rt-2300

 

Methylvinylpolysiloxane

G9

Rtx-1

 

Phenyldiethanolamine succinate polyester

G12

Phenyldiethanolamine succinate polyester

 

D-Sorbitol

G13

Sorbitol

Same properties without binding.

Polyethylene glycol (avg. mol. wt. of 950 to 1050) or PEG 1000

G14

Carbowax 1000 (g/mole)

 

Macrogol 20000 or PEG 20M

G16

Carbowax 20M (g/mole), Stabilwax

Polyethylene glycol compound (avg. mol. wt. about 15,000). A high molecular weight compound of polyethylene glycol with a diepoxide linker.

25% Phenyl-25% cyanopropyl-50% methylsilicone or p/p poli (cyano-propyl)(methyl)(phenyl)(methyl) siloxane

G19

OV-225

 

Polyethylene glycol (avg. mol. wt. of 380 to 420)

G20

Carbowax 400 (g/mole)

 

Polyethylene glycol adipate, ethylene glycol adipate

G23

EGA

 

Diisodecyl phthalate

G24

Diisodecyl phthalate

 

Polyethylene glycol compound TPA. A high molecular weight compound of a polyethylene glycol and a diepoxide that is esterified with terephthalic acid.

G25

Carbowax 20M TPA (g/mole)

 

25% 2-Cyanoethyl-75% methylpolysiloxane

G26

XE-60

 

5% Phenyl-95% methylpolysiloxane

G27

Rtx-5, SE-52

 

25% Phenyl-75% methylpolysiloxane

G28

DC 550

 

CO880 or nonylphenoxypoly(ethyleneoxy)ethanol (avg. ethyleneoxy chain length is 30); nonoxynol 30.

G31

IGEPAL-CO 880

 

AT-1000 or a high molecular weight compound of a polyethylene glycol and a diepoxide that is esterified with nitroterephthalic acid.

G35

Rt-1000

 

1% vinyl-5% phenylmethylpolysiloxane

G36

Rtx-5, SE-54

 

Phase G1 containing a small percentage of a tailing inhibitor

G38

Rt-2100/ 0.1% Carbowax 1500 (g/mole)

 

Polyethylene glycol (avg. mol. wt. about 1500)

G39

Carbowax 1500/1540 (g/mole)

Macrogol 1500 or PEG 1500

 

SOLID SUPPORTS USP Restek Equivalent

Notes

Siliceous earth flux calcined, acid washed and water washed until neutral

S1A

Silcoport-W, DiatoSorb-WAW, DiatoSorb-WHP

 

Siliceous earth, treated as S1A and both acid and base washed

S1AB

N/A

Not available. Contact Technical Support.

A support prepared from crushed firebrick and calcined or burned with a clay binder above 900 °C with subsequent acid wash. It may be silanized.

S1C

Chromosorb PAW, Chromosorb PAW DMDCS

 

A support prepared from crushed firebrick and calcined or burned with a clay binder above 900 °C, not acid washed. It may be silanized.

S1D

Chromosorb PNAW

 

Untreated siliceous earth

S1NS

DiatoSorb-WNAW

 

Styrene-divinylbenzene co-polymer having a nominal surface area of less than 50 m2 per gram and an average pore size of 0.3 to 0.4 μm

S2

Chromosorb 101

 

Ethyl vinylbenzene-divinylbenzene co-polymer having a nominal surface area of less than 500-600 m2 per gram and an average pore size of 0.0075 μm

S3

HayeSep Q

 

Styrene-divinylbenzene copolymer with aromatic -O and -N groups having a nominal surface area of 400 to 600 m2/g and an average pore diameter of 0.0076 μm

S4

Porapak R

 

High molecular weight tetrafluoroethylene polymer 40 to 60 mesh

S5

Chromosorb T 40/60

 

Styrene-divinylbenzene co-polymer having a nominal surface area of less than 250 - 300 m2 per gram and an average pore size of 0.0091 μm

S6

HayeSep P

 

Graphitized carbon having a nominal surface of 12 m2 per gram

S7

CarboBlack C

 

Copolymer of 4-vinylpyridine styrene-divinylbenzene

S8

HayeSep S

 

Porous polymer based on 2,6-diphenyl-p-phenylene oxide

S9

Tenax TA

 

Highly cross-linked co-polymer of acrylonitrile and divinylbenzene

S10

HayeSep C

 

Graphitized carbon having a nominal surface of 100 m2 per gram modified with small amounts of petrolatum and polyethylene glycol compound

S11

CarboBlack B 80/120 3% Rt-1500

 

Graphitized carbon having a nominal surface area of 100 m2 per g

S12

CarboBlack B

 
PHOT3287A-UNV