525.2 Internal & Surrogate Standard Back Catalog number: 92386 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2032.12-50-NN 2-Chlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL, Price on request 57020 Calcium (Ca) Price on request 57952 Tellurium (Te) Price on request