Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4353-K-5AC ISO 8165-1 Internal Control Stock Solution 1 1 Internal standard, 1000µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7] Price on request 2543.20-100MG Amitriptyline hydrochloride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 549-18-8 Price on request 70254 Prometryne, 1000µg/ml in MeOH, 1ml Price on request