Interference Standards Set Back Catalog number: 53038 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MENDOS-S (13C9)Endosulfan Sulfate, 100µg/ml in Nonane, 1,2ml Price on request 679804 Spiramycin, 100 µg/ml, Methanol, 1ml Price on request 79159 N-Nitrosodimethylamine Price on request