Guanylurea-HCl, 100µg/ml in MeOH, 5ml Back Catalog number: 18000-2529-100ME5 Manufacturer: NEOCHEMA Availability: In the manufacturer's stock Price on request - + Recommended PCB-ISS-H Mass-Labelled PCB Internal/Recovery Standards, 1.2ml, nonane Price on request 3689.16-K-ME 4-tert-Octylphenol monoethoxylate,1000 µg/mL,MeOH,1mL, Price on request 59419 Custom Calibration Standard Price on request