Packed Column USP Phase and Support Cross-Reference Chart
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 |
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 (CW-1000) g/mole |
|
|
Macrogol 20000 or PEG 20M |
G16 |
Carbowax 20M (CW-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 (CW-400) g/mole |
|
|
Diisodecyl phthalate |
G24 |
Diisodecyl phthalate (DIDP) |
|
|
Polyethylene glycol compound TPA. A high molecular weight compound of a polyethylene glycol and a diepoxide that is esterified with terephthalic acid. |
G25 |
Carbowax 20 TPA (CW-20MTPA) 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 |
| SOLID SUPPORTS | USP | Restek Equivalent |
Notes |
|
Siliceous earth flux calcined, acid washed and water washed until neutral |
S1A |
Silcoport-W, DiatoSorb-WAW, DiatoSorb-WHP |
|
|
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 |
Our packed columns are prepared with SilcoSmooth tubing and stable bonded-phase technology resulting in a column with the inertness of glass and the strength of stainless steel. Learn more about our packed columns in this technical article.