Internal Standards Mix 33, 2000 ng/µl, 1ml Back Catalog number: YA08273300TO Availability: In the manufacturer's stock Price on request - + Recommended 59957 Acetate (CH3COO-) Price on request 79044 Parathion methyl Price on request 11157.10-10MG Perfluorodecane sulfonic acid,neat,neat,10mg, Price on request