Caps (PE) for 5mm NMR-Tubes, black, 100 pcs Back Catalog number: 1187 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 1189 Caps (PE) for 5mm NMR-Tubes, green, 100 pcs Price on request 1194 Caps (PE) for 5mm NMR-Tubes, yellow, 100 pcs Price on request 1196 Caps (PE) for 5mm NMR-Tubes, sky, 100 pcs Price on request