QC Standard 4 Back Catalog number: 53087 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MTCS-M 5-Chloro-2-(2,4-dichloro[13C6]phenoxy)[13C6]phenol, 1.2ml x 50ug/ml, methanol Price on request 95004 Desisopropylatrazine & Pendimethalin Price on request 684437 Potassium chlorate, 250mg Price on request