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.
