Empore™ SPE Extraction Disks, type SDB-XC
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Empore™ SPE Extraction Disks, type SDB-XC
Disks
Empore™ extraction disks provide a sample prep solution for large volume samples. The disk format provides a large surface area for sorbent/sample contact. Faster flow rates and higher throughput are realized compared to liquid-liquid extraction or traditional packed column technology.
Sorbent Information
SDB-XC is a poly(styrenedivinylbenzene) copolymer used as a reversed phase sorbent for solid phase extraction. SDB-XC is not bonded to silica but is a 100% copolymeric particle that is spherical, porous and cross-linked. It does not exhibit the secondary cationic (silanol) interactions and pH limitations common to bonded silica sorbents, so it offers more predictable and reproducible reversed phase interaction.
SDB-XC may be substituted into methods that use C18 or C8 bonded silica and often demonstrates greater capacity. The structure of SDB-XC provides unique selectivity, especially in the retention of moderately polar, water-soluble analytes. However, since SDB-XC displays both aromatic and aliphatic interactions and does not display secondary cationic attraction, some existing methods may require adjustment to optimize analyte retention and elution.
Empore™ SDB-XC Extraction Disk
poly(styrenedivinylbenzene) copolymer
These products are intended for use during scientific research only and are not intended for used in medical devices or in assessment and treatment of clinical patients.
Features and Benefits
- SDB-XC is a poly(styrenedivinylbenzene) copolymer used as a reversed phase sorbent for solid phase extraction
- SDB-XC is not bonded to silica but is a 100% copolymeric particle that is spherical, porous and cross-linked
- It does not exhibit the secondary cationic (silanol) interactions and pH limitations common to bonded silica sorbents, so it offers more predictable and reproducible reversed phase interaction
- Ultra-fast flow rate at 350mL/min– 2X faster than other leading brands
- Least elution volume– 1/3 of other leading brands and 1/10 of loose-packed SPE
- Highest consistency & reproducibility– 10-15% higher than Waters Oasis plates
- Least particle fines in eluates-1/10 of other leading brands to increase efficiency >25 (reducing tube clogging & system downtime
Comparison of Typical Silica and Copolymer Sorbents
| |
Silica |
Copolymer |
| pH Stability |
2 to 12 |
1 to 14 |
| % Organic |
<22%* |
100% |
| Secondary Interactions |
Yes |
No |
| Functionality |
Aliphatic |
Aromatic and aliphatic |
| Particle Shape |
Irregular |
Spherical |
| Pore Size |
60 Å |
80 Å |
*varies from about 6% to 22% carbon, depending on functional group attached
Bioanalytical Applications
- glucuronide metabolites
- opiates
- stimulants
- antidepressants
- antiarrhythmics
- anticonvulsants
- antibiotics
- antihypertensives
- benzodiazepines
- moderately polar, water-soluble analytes
EPA Approved Methods
- 515.2 Chlorinated Acids
- 526.1 Selected Semi-Volatile Organics
- 8041 Phenols
- 8081 Organochlorine Pesticide Leachate
- 8270 Semi-Volatile Organic Compounds – TCLP Leachate
- 8321 Phenoxyacid Herbicides – TCLP Leachate
- 8330 Nitroaromatics and Nitroamines
Nominal Sorbent Properties
| Sorbent |
Poly(styrenedivinylbenzene) |
| Surface Area |
450 m2/g |
| Particle Size |
16 µm |
| Pore Size |
80 Å |