WAX Sorbent Chemistry Overview WAX (Weak Anion eXchange) SPE sorbents represent a sophisticated mixed-mode extraction technology designed specifically for strong acidic compounds. Unlike traditional single-mode sorbents, WAX employs a dual retention mechanism combining both ion-exchange and reversed-phase interactions. This innovative approach provides superior retention for strong acidic analytes, particularly those with pKa values below 1, […]
1. HLB Sorbent Chemistry Hydrophilic-Lipophilic Balanced (HLB) sorbents represent a significant advancement in solid-phase extraction technology. Unlike traditional silica-based sorbents, HLB sorbents are constructed from a water-wettable copolymer that combines both hydrophilic and lipophilic retention mechanisms in a single polymeric structure. The fundamental chemistry of HLB sorbents involves a carefully engineered copolymer that provides balanced
When Should You Use HLB Instead of Ion Exchange SPE? Read More »
Chemistry of Acidic Analytes Acidic analytes represent a broad class of compounds characterized by their ability to donate protons, typically containing functional groups such as carboxylic acids, phenols, sulfonic acids, or phosphonic acids. These compounds exhibit unique chemical behavior that directly impacts their interaction with solid-phase extraction (SPE) sorbents. Understanding their fundamental properties is crucial
Properties of Basic Analytes Basic compounds represent a diverse class of analytes characterized by their ability to accept protons or donate electron pairs. These compounds typically contain nitrogen atoms with lone electron pairs, such as amines, alkaloids, pharmaceuticals, and various drug metabolites. The fundamental property governing their behavior in solid-phase extraction (SPE) is their pKa
How to Select SPE Cartridges for Basic Compounds Read More »
High Throughput Screening Overview High throughput screening (HTS) represents a paradigm shift in analytical chemistry, enabling laboratories to process hundreds or even thousands of samples simultaneously rather than sequentially. This approach has become essential in pharmaceutical development, clinical diagnostics, environmental monitoring, and food safety testing where large sample volumes demand rapid turnaround times. The 96-well
