13C3-Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 681491 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 59877 Scandium (Sc) Price on request 98138 FID Test Mix - 20ug/mL Price on request 55103 RCRA Metals in Soil #2 Price on request