Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 92908 2-Methylpentane & 1,2,4-Trimethylbenzene Price on request S-4216-SET2 ISO 9377-2 Calibration Mixture of Minerals Oils Mineral oils (S-4215) in pentane, set of 6x4,5mL 1: Blank 2: 0.005 mg/mL 3: 0.025 mg/mL 4. 0.050 mg/mL 5. 0.100mg/mL 6. 0.300mg/mL Price on request 675169 3,5-Dichlorophenol, 100 µg/ml, Methanol, 5ml Price on request