HPTLC-MS was used to analyze stevioside and rebaudioside in artificial sweeteners, stevia plants, cola and isotonic drinks with a minimum of sample preparation.
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.
For filtering large volumes of biological solutions, we manufacture specialized equipment including centrifugal filtering devices, discs, cells and solvents.
Syringe membrane filter selection and validation methods to assess analyte loss due to membrane filter adsorption in pharmaceutical quality control (QC) testing.
Syringe filter selection guide for HPLC, UHPLC, and Ion Chromatography using pore size, filter diameter, chemical compatibility, analyte binding, and extractables.
Ultrafiltration using Amicon® Ultra centrifugal devices for concentrating virus in preparation of high titer virus stocks and isolation of virus from samples.
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.
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
This page shows the performance of Whatman™ Grade 40 and Grade 41 quantitative ashless filter paper in three metal content tests, high molybdenum, lead, and zinc for the mining industry.
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