EPA 8240B Calibration Standard Back Catalog number: 98430 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50420 Mineral Spike Price on request 3431.9-K-ME MCPA,1000 µg/mL,MeOH,1mL, Price on request 10916.27-K-ME (±)-Verapamil-d3 hydrochloride (N-methyl-d3) ,1000 µg base/mL,MeOH,1mL Price on request