Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94739 2,4-Diaminotoluene Price on request C379690 2-Chloro-1,3-propanediol, 25mg Price on request 681677 Isomethiozin, 100mg Price on request