4,4’-DDD Back Catalog number: 79148 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4028-SET Aromatic Fraction Peak Height Control Set (S-4029 + S-4030) Price on request 10409.19-200-T 12-Methylbenz[a]anthracene Price on request 60254 Aroclor 1254 in Transformer Oil Price on request