*taxes and shipping not included
Delivery time approx. 5 working days
For protection of your main HPLC column from contamination, it is recommended to use guard columns. These short columns are placed into a guard column holder. The guard column holder in combination with a guard column inside is installed between the injector and the HPLC column. This installation prevents chemical impurities to reach the main column. Because a contamination could form an irreversible bond with the column packing material (stationary phase) and this can result in shorter column life. If you want to prolong the lifetime of your main column, then these short columns can help you.
| Method | HPLC, analytical |
| Brand | NUCLEODEX |
| Base material | NUCLEOSIL - the standard silica |
| Phase | NUCLEODEX BETA-OH |
| USP listing | L45 |
| Surface chemistry | β-cyclodextrin (chiral selector) modification |
| Mode | Special application or diverse |
| Type | EC HPLC guard column (analytical) |
| Hardware | Stainless steel |
| Column length | 4 mm |
| Column inner diameter | 3 mm |
| Particle type | Fully porous particles (FPP) |
| Particle shape | Spherical |
| Particle size | 5 µm |
| Eluent in HPLC column | CH₃OH (methanol) – 0.1 % TEAA (triethylammonium acetate), pH 4 (55/45, v/v) |
| Recommended application(s) | Guard column, ideal protection for your main column, HPLC |
| Endcapped | No |
| Carbon content | Not available or proprietary |
| pH stability | 3.0–8.0 |
| Pore size | 100 Å |
| Specific surface according to BET | 350 m²/g |
| Temperature stability (max) | 50 °C |
| Pressure stability (max) | 400 bar / 5800 psi |
| Storage temperature | 15–25 °C / 59–77 °F |
| Scope of delivery | 1x analytical HPLC guard column |
| Gross weight (incl. packaging) | 19.1 g / 0.04 lbs |
| Packaging dimensions | 73 x 73 x 20 mm / 2.87 x 2.87 x 0.79 Inch |
| Hazardous material | No |
