Method 507 Analytes Back Catalog number: 97482 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66189 2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Price on request C300800-1G Chitin, Practical Grade, 1g Price on request 98988 Sodium benzoate Price on request