How can neutral analytes be efficiently concentrated in the presence of ionized acidic or basic contaminants? This SPE tip explains how mixed-mode cartridges improve selectivity and cleanup.

Practical guide to oligonucleotide sample preparation using SPE. Learn how to optimize wash and elution steps for clean extracts and reliable LC-MS bioanalysis.

A streamlined workflow for N-linked glycan sample preparation, combining PNGase F digestion, fluorescent labeling, and HILIC SPE clean-up for reliable HPLC and LC-MS analysis.

Matrix effects can suppress or enhance analyte signals and compromise accuracy. Learn how sample prep techniques—especially SPE with Strata-X PRO—reduce phospholipid interference and improve LC-MS results.

A clear guide to Normal Phase SPE: when to use it, how polar interactions drive retention, and which solvents to choose in increasing polarity—plus a quick reference list for optimized sample preparation.

Learn how to evaluate column loadability when scaling from analytical to preparative HPLC, and how to balance purity, yield, and productivity for optimal purification.

Learn how to balance purity, yield, and throughput when scaling analytical HPLC methods to preparative chromatography.

Discover how hybrid HPLC materials extend pH stability up to 12, improving retention and peak shape for basic compounds. Learn how Gemini™ and Kinetex™ EVO columns enhance LC-MS/MS performance.

Learn how to minimize peak tailing when analyzing basic compounds on type A silicas. Explore pH adjustment, mobile phase modifiers, and modern type B silica columns for sharper, more symmetrical peaks.

Learn how silica end-capping improves HPLC column performance. Discover how C18, PS-C18, Polar C18, and XB-C18 chemistries enhance retention, peak shape, and selectivity for various analytes.