| Column No. | Vendor | Brand | Mode | Modification | Int. Diam. | Length | Particles | Pores |
|---|---|---|---|---|---|---|---|---|
| Xt3B18203 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 30 mm | 3.0 μm | — |
| Xt3B18205 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 50 mm | 3.0 μm | — |
| Xt3B18210 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 100 mm | 3.0 μm | — |
| Xt3B18215 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 150 mm | 3.0 μm | — |
| Xt3B18220 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 200 mm | 3.0 μm | — |
| Xt3B18225 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 250 mm | 3.0 μm | — |
| Xt3B18303 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 30 mm | 3.0 μm | — |
| Xt3B18305 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 50 mm | 3.0 μm | — |
| Xt3B18310 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 100 mm | 3.0 μm | — |
| Xt3B18315 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 150 mm | 3.0 μm | — |
| Xt3B18320 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 200 mm | 3.0 μm | — |
| Xt3B18325 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 250 mm | 3.0 μm | — |
| Xt3B18330 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 300 mm | 3.0 μm | — |
| Xt3B184003 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 30 mm | 3.0 μm | — |
| Xt3B184005 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 50 mm | 3.0 μm | — |
| Xt3B184010 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 100 mm | 3.0 μm | — |
| Xt3B184015 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 150 mm | 3.0 μm | — |
| Xt3B184020 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 200 mm | 3.0 μm | — |
| Xt3B184025 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 250 mm | 3.0 μm | — |
| Xt3B184030 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 300 mm | 3.0 μm | — |
| Xt3B18403 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 30 mm | 3.0 μm | — |
| Xt3B18405 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 50 mm | 3.0 μm | — |
| Xt3B18410 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 100 mm | 3.0 μm | — |
| Xt3B18415 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 150 mm | 3.0 μm | — |
| Xt3B18420 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 200 mm | 3.0 μm | — |
| Xt3B18425 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 250 mm | 3.0 μm | — |
| Xt3B18430 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 300 mm | 3.0 μm | — |
| Xt5B18203 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 30 mm | 5.0 μm | — |
| Xt5B18205 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 50 mm | 5.0 μm | — |
| Xt5B18210 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 100 mm | 5.0 μm | — |
| Xt5B18215 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 150 mm | 5.0 μm | — |
| Xt5B18220 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 200 mm | 5.0 μm | — |
| Xt5B18225 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 250 mm | 5.0 μm | — |
| Xt5B18303 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 30 mm | 5.0 μm | — |
| Xt5B18305 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 50 mm | 5.0 μm | — |
| Xt5B18310 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 100 mm | 5.0 μm | — |
| Xt5B18315 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 150 mm | 5.0 μm | — |
| Xt5B18320 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 200 mm | 5.0 μm | — |
| Xt5B18325 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 250 mm | 5.0 μm | — |
| Xt5B18330 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 300 mm | 5.0 μm | — |
| Xt5B184003 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 30 mm | 5.0 μm | — |
| Xt5B184005 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 50 mm | 5.0 μm | — |
| Xt5B184010 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 100 mm | 5.0 μm | — |
| Xt5B184015 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 150 mm | 5.0 μm | — |
| Xt5B184020 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 200 mm | 5.0 μm | — |
| Xt5B184025 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 250 mm | 5.0 μm | — |
| Xt5B184030 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.0 mm | 300 mm | 5.0 μm | — |
| Xt5B18403 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 30 mm | 5.0 μm | — |
| Xt5B18405 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 50 mm | 5.0 μm | — |
| Xt5B18410 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 100 mm | 5.0 μm | — |
| Xt5B18415 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 150 mm | 5.0 μm | — |
| Xt5B18420 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 200 mm | 5.0 μm | — |
| Xt5B18425 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 250 mm | 5.0 μm | — |
| Xt5B18430 | Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 4.6 mm | 300 mm | 5.0 μm | — |
| Xt3B8203 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 30 mm | 3.0 μm | — |
| Xt3B8205 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 50 mm | 3.0 μm | — |
| Xt3B8210 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 100 mm | 3.0 μm | — |
| Xt3B8215 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 150 mm | 3.0 μm | — |
| Xt3B8220 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 200 mm | 3.0 μm | — |
| Xt3B8225 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 250 mm | 3.0 μm | — |
| Xt3B8303 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 30 mm | 3.0 μm | — |
| Xt3B8305 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 50 mm | 3.0 μm | — |
| Xt3B8310 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 100 mm | 3.0 μm | — |
| Xt3B8315 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 150 mm | 3.0 μm | — |
| Xt3B8320 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 200 mm | 3.0 μm | — |
| Xt3B8325 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 250 mm | 3.0 μm | — |
| Xt3B8330 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 300 mm | 3.0 μm | — |
| Xt3B84003 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 30 mm | 3.0 μm | — |
| Xt3B84005 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 50 mm | 3.0 μm | — |
| Xt3B84010 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 100 mm | 3.0 μm | — |
| Xt3B84015 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 150 mm | 3.0 μm | — |
| Xt3B84020 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 200 mm | 3.0 μm | — |
| Xt3B84025 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 250 mm | 3.0 μm | — |
| Xt3B84030 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 300 mm | 3.0 μm | — |
| Xt3B8403 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 30 mm | 3.0 μm | — |
| Xt3B8405 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 50 mm | 3.0 μm | — |
| Xt3B8410 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 100 mm | 3.0 μm | — |
| Xt3B8415 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 150 mm | 3.0 μm | — |
| Xt3B8420 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 200 mm | 3.0 μm | — |
| Xt3B8425 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 250 mm | 3.0 μm | — |
| Xt3B8430 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 300 mm | 3.0 μm | — |
| Xt5B8203 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 30 mm | 5.0 μm | — |
| Xt5B8205 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 50 mm | 5.0 μm | — |
| Xt5B8210 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 100 mm | 5.0 μm | — |
| Xt5B8215 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 150 mm | 5.0 μm | — |
| Xt5B8220 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 200 mm | 5.0 μm | — |
| Xt5B8225 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 250 mm | 5.0 μm | — |
| Xt5B8303 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 30 mm | 5.0 μm | — |
| Xt5B8305 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 50 mm | 5.0 μm | — |
| Xt5B8310 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 100 mm | 5.0 μm | — |
| Xt5B8315 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 150 mm | 5.0 μm | — |
| Xt5B8320 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 200 mm | 5.0 μm | — |
| Xt5B8325 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 250 mm | 5.0 μm | — |
| Xt5B8330 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 300 mm | 5.0 μm | — |
| Xt5B84003 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 30 mm | 5.0 μm | — |
| Xt5B84005 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 50 mm | 5.0 μm | — |
| Xt5B84010 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 100 mm | 5.0 μm | — |
| Xt5B84015 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 150 mm | 5.0 μm | — |
| Xt5B84020 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 200 mm | 5.0 μm | — |
| Xt5B84025 | Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 250 mm | 5.0 μm | — |
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