PVDF and PTFE are the two most common syringe filter membranes in analytical labs, but their chemical compatibility differs significantly. This guide compares solvent resistance, protein binding, extractables, thermal stability, and real-world selection criteria to help you choose the right membrane for your HPLC or biological sample preparation workflow.

In routine HPLC and GC analysis, sample pretreatment directly dictates column lifespan and baseline quality. When handling a 10mL organic solvent sample, choos...

Static headspace and liquid injection demand different vial and closure specifications. This guide covers 10ml/20ml headspace vial dimensions, wall thickness, 3mm PTFE/Silicone septa, Shore A hardness, crimp vs screw caps, and procurement criteria for high-pressure GC-HS analysis.

HPLC and LC-MS both separate compounds by liquid chromatography, but they identify what comes off the column in completely different ways. One detects by light absorption, the other by molecular mass. This guide breaks down five critical factors: sensitivity thresholds, selectivity, sample preparation requirements, cost, and consumable specifications. It also explains why most LC-MS problems trace back to low-quality vials and filters, and why certified Type 5.0 vials and 0.22um syringe filters are essential for trace analysis. Free sample kit available.