Caffeine, 1000µg/ml in MeOH, 1ml Back Catalog number: 71151 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended DF-149-S 1,4,9-Trichlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 73061 Fentanyl-D5 Price on request 94476 Piperonyl butoxide Price on request