SPE cartridges CHROMAFIX® Dry (Na2SO4) (M) are solid-phase extraction cartridges for drying within chromatographic sample-preparation workflows. The medium (M) Dry (Na2SO4) configuration belongs to the CHROMAFIX® cartridge line and is used when a sodium sulfate drying step is built into SPE protocols. Packs contain 50 pc(s) and carry a stated weight of 0,245 kg. These cartridges address routine solid-phase extraction needs across applications, chromatography and sample preparation where medium-size drying cartridges are preferred. Supplied from manufacturer MACHEREY-NAGEL, the Dry (Na2SO4) (M) units give laboratories a defined medium format for integrating moisture removal into cartridge-based extraction sequences. SPE continues to serve as a standard technique for preparing samples prior to separation and detection. The product is listed as SPE cartridges, CHROMAFIX®, Dry (Na2SO4) (M), consistent with the given pack size, weight and configuration data only.