Compendial methods often specify a USP packing code (L-code). Below are the Eprogen (SynChropak) columns corresponding to the listed USP codes (source: your provided USP HPLC packings PDF).
Octadecylsilane chemically bonded to porous or non-porous silica/ceramic particles (typ. 1.5–10 µm) or monolithic silica.
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L1 | SynChropak RPP | Eprogen, Inc. |
| L1 | SynChropak RPP-1000 | Eprogen, Inc. |
| L1 | SynChropak RPP-4000 | Eprogen, Inc. |
| L1 | SynChropak RPP-100 | Eprogen, Inc. |
| L1 | SynChropak RPS-100 | Eprogen, Inc. |
Octylsilane chemically bonded to silica particles.
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L7 | SynChropak RP8 | Eprogen, Inc. |
| L7 | SynChropak RP8-1000 | Eprogen, Inc. |
Silica gel with a chemically bonded strongly basic quaternary ammonium anion‑exchange coating (typ. 5–10 µm).
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L14 | SynChropak Q300 | Eprogen, Inc. |
Dihydroxypropane groups chemically bonded to porous silica or hybrid particles (typ. 1.5–10 µm) or monolithic silica.
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L20 | SynChropak GPCPEP | Eprogen, Inc. |
| L20 | SynChropak GPC series 100, 300, 500 | Eprogen, Inc. |
Butylsilane chemically bonded to totally porous silica particles (typ. 1.5–10 µm).
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L26 | SynChropak RP4, RP4-1000, RP4-4000 | Eprogen, Inc. |
Packing capable of separating dextrans by molecular size over ~4,000–500,000 Da.
| USP Packing | Brand Name (Eprogen) | Manufacturer |
|---|---|---|
| L33 | SynChropak GPC Linear | Eprogen, Inc. |
| L33 | SynChropak GPC series 100, 300, 500, 1000, 4000 | Eprogen, Inc. |
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