4,4'-DDD, 10.0 µg/ml, Ethyl acetate, 10ml Back Catalog number: 673529 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 90687 Benzyl butyl phthalate Price on request S-4515-2-50PEX10 ISO 9377-2 Extraction solvent standard solution Dilute of "extraction solvent stock solution" (S-4212) 10 times with the extracting solvent (n-pentane) Use 50mL of extraction solvent standard solution pr. experiment Price on request 50624 Nitrite (NO2-) as N Price on request