MACHEREY-NAGEL 729230 CHROMAFIL Extra RC Syringe Filter, Labeled, 0.2µm Pore Size, 25 mm Membrane Diameter (Pack of 100): Amazon.com: Industrial & Scientific
MACHEREY NAGEL 5 Meter Rolle Universal Indikatorpapier pH 1-11 M 90201 : Amazon.de: Gewerbe, Industrie & Wissenschaft
MACHEREY-NAGEL 726380.3 Optima Wax Plus Capillary Columns for GC, Film Thickness: 0.25 µm, Length: 30 m, 0.25 mm ID, USP: G16: Amazon.com: Industrial & Scientific