Interference Standard Mix 2 Back Catalog number: 53040 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679877 2-Methyl-5-nitroaniline, 100 µg/ml, Acetonitrile, Price on request NAP3MHPS Sodium perfluoro-3-methylheptanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 72148 Diltiazem Price on request