- LiChrolut® CN 200 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® EN (40 - 120 µm) for solid phase extraction in environmental analysis
- LiChrolut® EN (40 - 120 µm) 100 mg (bottom) LiChrolut® RP-18 (40 - 63 µm) 200 mg (top) 6 ml standard PP-tubes 30 pieces
- LiChrolut® EN (40 - 120 µm) 200 mg 3 ml standard glass tubes 30 pieces
- LiChrolut® EN (40 - 120 µm) 200 mg 6 ml standard PP-tubes 30 pieces
- LiChrolut® EN (40 - 120 µm) 500 mg 6 ml standard PP-tubes 30 pieces
- LiChrolut® EN 200 mg 3 ml standard PP-tubes 30 pieces
- LiChrolut® Florisil® (150 - 250 µm) 1000 mg 6 ml standard PP-tubes 30 pieces
- LiChrolut® Florisil® (500 mg / 14 ml-12 cc) 50 pieces
- LiChrolut® RP-18 (40 - 63 µm) 100 mg 1 ml standard PP-tubes 100 pieces
- LiChrolut® RP-18 (40 - 63 µm) 200 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® RP-18 (40 - 63 µm) 500 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® RP-18 (40-63 µm) 500 mg 6ml standard PP-tubes 30 pieces
- LiChrolut® RP-18 (40 - 63 µm) 1000 mg 6 ml standard PP-tubes 30 pieces
- LiChrolut® RP-18 (40 - 63 µm) 2000 mg 6 ml standard PP-tubes 30 pieces
- LiChrolut® RP-18 E (40 - 63 µm) 200 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® RP-18 E (40 - 63 µm) 500 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® SCX (40 - 63 µm) 200 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® SCX (40 - 63 µm) 500 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® Si (25 - 40 µm) 200 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® Si (40 - 63 µm) 500 mg 3 ml standard PP-tubes 50 pieces
- LiChrolut® TSC (40 - 63 µm) 300 mg 3 ml standard PP-tubes 50 pieces
- Adapter (PTFE) Luer inlet for solvent reservoir, for LiChrolut® columns of various sizes
- Disposable PTFE liner for LiChrolut® vacuum manifold
- Enrichment capillaries for large-volume samples
- Frits (PTFE) for 3 ml glass columns, porosity 10 µm LiChrolut®
- Glass columns (empty) 3 ml compatible with SPE robot systems LiChrolut®
- LiChrolut® Drying unit for sample preparation
- Vacuum manifold for sample preparation LiChrolut®
- Exit cannulas for EXtrelut® NT 1 and EXtrelut® NT 3
LiChrolut® Solid-Phase Extraction |
The Reliable, Rapid Route to Successful Sample Preparation
The goal of solid-phase extraction is the selective isolation of target analytes from a complex sample, or much larger sample volume, prior to chromatography (e.g. HPLC, GC, TLC). As solid-phase extraction works on the principle of liquid chromatography, Merck's LiChrolut® columns use strong but reversible interactions between the analyte and surface of the stationary phase to ensure reliable and rapid extraction. Typical interactions include hydrophobic (Van-der-Waals forces), polar (hydrogen bonding, dipole-dipole forces) or ion exchange interactions.
Since interactions between the stationary phase and matrix should not occur, it is important to perform appropriate sample pretreatment. This allows the difference in chemical properties between the analyte and matrix components to be emphasized by altering the pH or the ionic strength of the sample solution. Under these conditions, the analyte is enriched as a narrow zone on the stationary phase. Subsequent to a washing step, which serves to remove possible adsorbed sample components, selective elution of the analytes can occur.
Outstanding Purity and Uniformity
LiChrolut® sorbents offer excellent batch-to-batch consistency. This is due to stringent and continuous quality controls from the selection of raw materials to the final product. The optimized, validated and certificated production of the sorbents also ensures a high degree of purity and uniformity, which is particularly valuable for trace analysis. Furthermore, the proportion of elutable components is negligibly small, resulting in purer extracts.
Features and Benefits
- Rapid sample preparation within minutes
- Higher recoveries without emulsion formation
- Highly precise analytical results using disposable cartridges
- Saving of solvent, hence lower material and disposal costs
- Possible to automate the entire process
- Optimized, validated and certified manufacturing
LiChrolut® Specifications
| Sorbent type | High porosity synthetic silica gel particles | Ethyl vinyl benzene divinyl benzene polymer (orange), irregular shaped |
|---|---|---|
| Particle size | 40-63 μm | 40-120 µm |
| Pore size | 60 Å | |
| Pore volume | 0.75 mL/g | |
| Specific surface area | ~ 600 m2/g | 1,200 m2/g (according to BET) |
| pH stability | pH 2-8 | pH 1-13 |
| Wide spectra of chemically modified phases |
Si 60 high purity, CN, RP-18e, RP-18, SCX (strong cation exchanger), TSC (Tox Screening Cation) |
|
| Capacity | 500 mg Caffeine/g sorbent (model substance for polar analytes) 500 mg Diisodecylphtalate DIDP/g sorbent (model substance for nonpolar analytes) |
Florisil Specifications
| Sorbent type | Magnesia-loaded silica gel |
|---|---|
| Particle size | 150-250 μm |
