EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11928.25-100-ME Irbesartan-d4 (2,3,5,6-phenyl-d4),ca. 100 µg/mL,MeOH,1mL, Price on request 675553 Chlorthiophos, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 677799 Succinic acid, 250mg Price on request