Guanylurea, 1000µg/ml in Water, 1ml Back Catalog number: 74085 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94577 EPA Method 524.2 Volatile Standard Price on request 2193.8-50-ME Perfluorooctane sulfonic acid, potassium salt,50 µg/mL,MeOH,1mL, Price on request 1127.17-100-T 3-Nitrobenzanthrone, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 17117-34-9 Price on request