Multi-Element Internal Standard / Back Catalog number: 53319 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3476.21-10MG Permethrin,neat,neat,10mg, Price on request E888863 Estradiol 17-Valerate-d12, 2,5mg Price on request 1980.17-10-IO 2-(4-Nonylphenoxy)acetic acid isomer mixture,10 µg/mL,isooctane,1mL, Price on request