Anions - QC Mix Back Catalog number: 54520 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12156.9-100-ME Acetylsalicylic acid-d4 (ring-d4),100 µg/mL,MeOH,1mL, Price on request DD-1379-S 1,3,7,9-Tetrachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 53095 Alternate Metals Kit Price on request