Copper (Cu) Back Catalog number: 59259 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70431 Phthalic anhydride Price on request 98861 Formaldehyde-DNPH Level 4 (2ug/mL) Price on request C15523100 Nifursol, certified, 0.1g Price on request