Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 11908.20-1G Fluorescein (free acid),neat,neat,1g, Price on request 3327.10-100 Captafol, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 2425-06-1 Price on request 675725 Mecarbam, 100 µg/ml, Ethyl acetate, 5ml Price on request