Leptophos Back Catalog number: 70725 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended VHG-INH41K-100 Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Price on request 73225 Erythromycin Price on request 678501 Siduron, 100 µg/ml, Acetonitrile, 1ml Price on request