SPE Products

MCX SPE cartridge extracting antidepressant compounds before LC-MS analysis

Step-by-Step Method for Extracting Antidepressants with MCX SPE

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Target Antidepressants for MCX SPE Extraction Mixed-mode cation exchange (MCX) solid phase extraction is particularly well-suited for the isolation of basic antidepressant compounds from biological matrices. The target antidepressants in this method include: Fluoxetine (Prozac®) – A bicyclic antidepressant with pKa of approximately 9.8, widely used for depression treatment with therapeutic levels of 40-450 ng/mL […]

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MCX and WCX SPE cartridges used for extracting basic drugs in a laboratory workflow

Choosing Between MCX and WCX SPE for Basic Drugs

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Overview of Mixed-Mode Cation Exchange SPE Mechanisms Mixed-mode solid phase extraction represents a sophisticated approach to sample preparation that combines multiple retention mechanisms within a single sorbent. For basic drug analysis, mixed-mode cation exchange (MCX and WCX) cartridges provide superior selectivity and sensitivity compared to traditional reversed-phase materials. These sorbents operate through a dual mechanism:

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robotic automation performing SPE extraction

Automating SPE Workflows with Robotic Liquid Handlers

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Automation Benefits in Analytical Labs In today’s demanding analytical environments, robotic liquid handlers have revolutionized solid-phase extraction (SPE) workflows by addressing critical laboratory challenges. According to comprehensive research on automated SPE systems, automation eliminates many variables associated with manual methods, resulting in improved precision, accuracy, and recovery rates. The consistency achieved through automated equipment performing

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automated 96 well SPE sample preparation

High-Throughput Sample Preparation Using 96-Well SPE Plates

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Overview of Plate-Based SPE Solid-phase extraction (SPE) has evolved significantly from traditional cartridge formats to high-throughput plate-based systems. The 96-well SPE plate represents a paradigm shift in sample preparation technology, enabling laboratories to process up to 96 samples simultaneously in a compact, standardized format. According to industry literature, SPE usage has been accelerating due to

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WCX SPE cartridge extraction of amine compounds

WCX SPE Method for Extraction of Amines in Biological Samples

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Amine-Containing Drug Compounds Overview Weak cation exchange (WCX) solid-phase extraction represents one of the most sophisticated approaches for isolating amine-containing drug compounds from complex biological matrices. These compounds encompass a broad spectrum of therapeutic agents including amphetamines, methamphetamine, phenylethylamine derivatives, and numerous basic pharmaceuticals that contain primary, secondary, or tertiary amine functional groups. According to

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WAX SPE cartridge extraction of weak acids

WAX SPE Protocol for Weak Acid Extraction

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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,

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comparison of HLB SPE and ion exchange cartridges

When Should You Use HLB Instead of Ion Exchange SPE?

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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

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MAX SPE cartridge extraction of acidic analytes

SPE Cartridge Selection for Acidic Analytes

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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

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MCX SPE cartridge extracting basic analytes

How to Select SPE Cartridges for Basic Compounds

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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

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automated sample preparation using 96 well SPE plate

When to Use 96-Well SPE Plates

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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

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