Functional groups, such as octyl (C8) and octadecyl (C18), can be bonded to the silica surface to provide non polar interactions. Each of these sorbents exhibits unique properties of retention and selectivity for a particular analyte. The choice of which sorbent is best for a particular method will be influenced by the percent recovery of analyte from the sample matrix and the cleanliness of the resulting chromatography.
This chemistry promotes high retention of a wide range of analytes, reducing method development time and facilitating a generic approach to sample preparation.
Functional groups, such as octyl (C8) and octadecyl (C18), can be bonded to the silica surface to provide non polar interactions. Each of these sorbents exhibits unique properties of retention and selectivity for a particular analyte. The choice of which sorbent is best for a particular method will be influenced by the percent recovery of analyte from the sample matrix and the cleanliness of the resulting chromatography.
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.
Spark has introduced the second edition of HySphere™ C8 End-Capped cartridges. We have selected a new perfect Spherical sorbent material with a narrow particle size distribution. This will create less back pressure during operation and allows you to run higher flow rates compared to our current HySphere™ C8 (EC). The new cartridge has the same excellent characteristics such as high extraction capacity and selectivity
DisQuE Dispersive Sample Preparation is a well proven, high throughput sample preparation method for a wide array of pesticides in produce. The kit contains conveniently packaged vials with pre-measured sorbents and buffers used to provide extraction and clean-up for up to 100 samples. Each 50 mL DisQuE Extraction tube contains 6 grams of magnesium sulphate and 1.5 grams of sodium acetate. Each 2 mL DisQuE Clean-Up tube cont…
MEPS (patent pending) performs the same function as SPE, namely the purification or speciation of samples, but with some significant differences: MEPS works with much smaller samples (as small as 10µL) than full scale SPE MEPS can be fully automated – the sample processing, extraction and injection steps are performed on-line using the same syringe MEPS is applicable to GC and LC Significantly reduces the volume of solvents an…
SCP Science DigiSEP Blue SPE Cartridges A general purpose, single use, cation removal cartridge. DigiSEP Blue from SCP Science is a highly selective exchange cartridge is ideal for retaining transition metals in samples that contain high concentrations of potassium and sodium as in sea water. DigiSEP Blue has an aminodiacetate group that acts as a chelating agent to a variety of metallic ations in solution providing a mean t…
Strata-X Drug B and N Solid Phase Extraction (SPE) sorbents are designed and quality control tested for basic and neutral drugs of abuse analysis, respectively. The sorbents are QC tested using drug probes from urine samples so that you can have confidence in your results. The sorbents also do not require conditioning/equilibrating steps, saving both time and solvent.
