Description
PP columns CHROMABOND® XTR, 6 ml vol., absorbent weight 1 g
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Eluents with higher alcohol contents cause an increase in volume of the aqueous phase on the CHROMABOND® XTR. In such case, the column might be overloaded which leads to a displacement of the aqueous phase from the column. Therefore a greater capacity column should be used.
Extraction of analytes form an aqueous to an organic phase:Column conditioning: Not requiredSample application: Aqueous solutions are applied to the dry CHROMABOND® XTR adsorbent. They are soaked up by the solid within a few minutes and spread over the surface of the kieselguhr material as a thin film.Elution: Lipophilic analytes are eluted with water-immiscible organic solvents; the aqueous phase remains on the CHROMABOND® XTR adsorbent. Polar, water-soluble analytes, which remain in the aqueous phase on the XTR adsorbent, can be eluted e.g. with saturated NaCl.
Solvents applicable for elution:Diethyl ether (T900)tert-Butyl methyl ether (T175)Ethyl acetate (T164)n-Hexane (T165)
General column parameters:Depending on the concentration of the analytes eluates can be analysed immediately, or the organic solvent is evaporated. The pH value of the aqueous solution can be altered on the column, which enables elution of different compounds of a sample under optimised conditions. Under certain circumstances, acidic, neutral, and basic compounds can be fractionated in this way.
| Volume | Filling quantity | Max. Loadability with aqueous solution | Waiting time before elution | Elution volume |
| 6 ml | 1 g | 1 ml | 5-10 min | 8 ml |
| 30 ml | 4,5 g | 5 ml | 5-10 min | 16 ml |
| 70 ml | 14,5 g | 20 ml | 10-15 min | 40 ml |
Kieselguhr phase for liquid-liquid extractionBase material coarse-grained kieselguhr (also known as diatomaceous earth, hydromatrix, celite®)
- Liquid-liquid extraction of highly viscous aqueous solutions such as physiological fluids (blood, plasma, and serum), dyes in textiles, environmental and food analysis without use of a separation funnel
- High water loadability without breakthrough of water during elution with organic solvents
- Also suitable for removing small amounts of water from solvents which are not miscible with water
- pH stability: 1-13
- Fast, reproducible and economical
- Simultaneous preparation of several samples
- No problems with phase separation, no formation of emulsions
- High recovery rates
- Saves of time and solvents
- Organic solutions don‘t need to be dried after separation
- Large pore size, high pore volume, constantly high batch-to-batch quality
Similar phases: EXtrelut®, Chem Elut™. Isolute® SLE+, Hydromatrix™
| Column volume | 6 ml |
| Filling quantity | 1 g |
| Packaging | 1 x 30 units |
| Phase | XTR |
| Separation principle | SLE, Special application or diverse |
| Column shape | SLE column |
| Material text | Material: PP columns with PE filter elements. |
| Column type | Polypropylene columns |
| Particle type | Fully porous particles (FPP) |
| Surface chemistry | Kieselguhr (diatomaceous earth, diatomite) |
| Recommended application(s) | Clinical chemistry, Dyes in textiles, Environmental and food analysis without use of a separation funnel, Highly viscous aqueous solutions, Liquid-liquid extraction (LLE), Physiological fluids (blood, plasma, and serum), Removing small amounts of water from solvents which are not miscible with water, Supported/solid liquid extraction (SLE) |
| Max. loadability with aqueous solution | 1 ml |
| Waiting time before elution | 5–10 min |
| Elution volume | 8 ml |
| Application Database (Macherey-Nagel) | SPE GC |