Calibration Standard Mix 2 Back Catalog number: 52011 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MET-11827C-250MG 1-(3,4-Dichlorophenyl)-3-methylurea, 250mg Price on request 680850 5-Hydroxy-2,4-D, 10mg Price on request 54511 Tetrabutyl Ammonium Hydroxide Price on request