WA EPH Matrix Spike Mix Back Catalog number: 51145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59947 Metals Mix - 4 Price on request M23-B-78-CDD 2,3-Dibromo-7,8-dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene Price on request 79255 2,4-D Price on request