Filtration

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Showing 1-19 of 19 results

Determination of Stevioside and Rebaudioside A in Stevia leaves, beverages and food additives using HPTLC-MS

HPTLC-MS was used to analyze stevioside and rebaudioside in artificial sweeteners, stevia plants, cola and isotonic drinks with a minimum of sample preparation.

Protein Concentration for Large Volumes Samples

For filtering large volumes of biological solutions, we manufacture specialized equipment including centrifugal filtering devices, discs, cells and solvents.

Nanoparticle Ultrafiltration

Filtration methods and membrane filter selection in nanoparticle purification and production.

Biotinylation Reagents

Biotin-labelled peptides have many important applications in immunology and histochemistry, such as affinity purification and FRET-based flow cytometry, solid-phase immunoassays, and receptor localization, that exploit the high affinity of streptavidin and avidin for biotin.

Universal Hydrophilic Syringe Filters: Millex® Hydrophilic PTFE

Millex® hydrophilic PTFE syringe filters boast broad chemical compatibility and are HPLC-certified, guaranteeing low extractables. With their robust performance, these filters can be used for a variety of samples without the risk of membrane failure or sample contamination.

Importance of Ultrafiltration in Countering Climate Change

Filtration and ultrafiltration techniques in environmental sampling and environmental research.

User Guide: Integrity Test Kit for small volume devices

This page describes how to use the Integrity Test Kit for small volume devices to integrity test non-vented and vented filter units with membrane surface areas of less than 15 cm2 (2.3 in2). Larger devices can be integrity tested using

Retentate filtration with Millicup™-FLEX disposable vacuum filtration units

Methods and tutorial video for filtration techniques in contamination analysis using a faster alternative to glass vacuum filtration systems.

Rapid Trypsin Digestion of Complex Protein Mixtures for Proteomics Analysis

Reliable and reproducible results in mass spectrometry proteomics analyses are highly dependent on robust sample preparation.

Syringe Filters

Answers to common syringe filter selection questions, such as sterile vs non-sterile, how to use, membrane and housing types, and pore size.

Cannabinoid Analysis of Hemp: Developing an Efficient HPLC Method Workflow

Several different HPLC method options are explored for the efficient and time effective analysis of cannabinoids in a sample of hemp flower. The differences between gradient and isocratic analyses are explored, and the two methods are compared in determining the

Virus Concentration by Ultrafiltration

Ultrafiltration using Amicon® Ultra centrifugal devices for concentrating virus in preparation of high titer virus stocks and isolation of virus from samples.

Filter Validation Studies for Pharmaceutical QC – Factors Affecting Analyte Binding

Syringe membrane filter selection and validation methods to assess analyte loss due to membrane filter adsorption in pharmaceutical quality control (QC) testing.

Membrane Learning Center

Learn about membranes filters and considerations in membrane selection including chemical compatibility, pore size and MWCO, binding and optical properties, and extractables for protein and small molecule analyte sample preparation, HPLC, LC-MS, and other analyses.

Syringe Filters for Chromatography

Syringe filter selection guide for HPLC, UHPLC, and Ion Chromatography using pore size, filter diameter, chemical compatibility, analyte binding, and extractables.

Dissolution Testing Filtration

Filtration is used in dissolution testing to end the dissolution process and prepare the sample for HPLC analysis. This page discusses the importance of filtration and utility of hydrophilic PTFE Millex® syringe filters in dissolution testing.

Evaluation of Millex^® Syringe Filters for Nitrosamine Impurities Testing in Pharmaceutical Drugs

An overview of nitrosamine impurity testing, worldwide regulations, and key considerations in filter selection for sample preparation and analysis.

Analysis of PFAS Extractables in Filtration Products Using Modified EPA 537.1

View data on fluorinated extractables, recovery, and recommended filtration products for PFAS testing using Modified EPA 537.1.

Analysis of PFAS Extractables in Filtration Products Using Modified EPA 1633

Data and recommended filtration products for PFAS testing using Modified EPA 1633.