What is HLB sorbent?
Oasis HLB is a Hydrophilic-Lipophilic-Balanced, water-wettable, reversed-phase sorbent for all your SPE needs. It provides superior reversed-phase capacity with a neutral polar ‘hook’ for enhanced retention of polar analytes.
What is Oasis HLB cartridge?
The 6 cc Oasis HLB cartridges contain the Oasis HLB sorbent, which is a universal polymeric reversed-phase sorbent that was developed for the extraction of a wide range of acidic, basic, and neutral compounds from various matrices using a simple, generic protocol.
What is an HLB column?
Select HLB SPE is a hydrophilic modified, styrene-based polymer developed for the solid phase extraction of a highly broad range of compounds from aqueous samples. However, because the phase is hydrophilic modified, it is also selective for more polar compounds (HLB: hydrophilic lipophilic balance).
What does HLB value indicate?
Hydrophilic–lipophilic balance (HLB) is the balance of the size and strength of the hydrophilic and lipophilic moieties of a surfactant molecule. The HLB scale ranges from 0 to 20. In the range of 3.5 to 6.0, surfactants are more suitable for use in W/O emulsions.
What is C18 cartridge?
The C18 solid phase extraction (SPE) cartridge uses octadecyl silica as a filler to retain non-polar compounds by strong hydrophobic interaction. The filler retains most of the organic matter and is widely used in the fields of environmental and food safety.
What is sorbent in SPE?
Ion-exchange sorbents isolate analytes based on the ionic state of the molecule, either cationic or anionic, where the charged analyte exchanges for another charged analyte that is already sorbed to the ion-exchange resin. SPE applications in this case are essentially identical to classical ion exchange.
What is SPE technique?
Solid phase extraction (SPE) is a technique designed for rapid, selective sample preparation and purification prior to the chromatographic analysis (e.g. HPLC, GC, TLC). In SPE, one or more analytes from a liquid sample are isolated by extracting, partitioning, and/or adsorbing onto a solid stationary phase.
What is the HLB of water?
Hydrophile Lipophile Balance (HLB) is a way of measuring a substances solubility within water or oil. The HLB system was created as a tool to make it easier to use nonionic surfactants. The HLB system enables you to assign a HLB value to a surfactant and a HLB requirement to the application for that surfactant.
What does high HLB mean?
high water-solubility
The HLB number is usually on a scale of 0–20. Lower HLB values are an indication of high oil affinity. A high HLB value, on the other hand, indicates high water-solubility.
Is silica a sorbent?
Typically the sorbents consist of 40-μm silica gel with approximately 60-Å-pore diameters. These sorbents were some of the classical reversed-phase sorbents introduced in the 1960s.
What kind of sorbent is in Oasis HLB plus?
Oasis HLB Plus Short cartridges contain the Oasis HLB sorbent, which is a universal polymeric reversed-phase sorbent for extraction of a wide range of acidic, basic, and neutral compounds from various matrices using a simple, generic protocol.
How much Oasis HLB is in a µelution plate?
Each well of the µElution plate contains 2 mg of the Oasis HLB sorbent, which is a universal polymeric reversed-phase sorbent for extraction of a wide range of acidic, basic, and neutral compounds from various matrices using a simple, generic protocol.
Why are Oasis HLB plus short cartridges wettable?
The sorbent of the Oasis HLB Plus Short Cartridge is also water wettable. This enables it to maintain its capability for higher retention and excellent recoveries even if the sorbent runs dry. This ensures that you do not need to take any extra steps to prevent the sorbent beds from drying out during the critical steps before the sample is loaded.
Why do you use Oasis water wettable sorbents?
The water-wettable Oasis Sorbents offer superior retention capacity, allowing a wider polarity spectrum of analytes, even in cases where the sorbent bed becomes dry during conditioning and sample loading. You will eliminate the need for repeat preparation because of the rugged and robust SPE methods offered through this patented sorbent.