Semi-Volatile Internal Standard Back Catalog number: 92258 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4245-100-ME EPA 1653 Chlorocathecols 7 Analytes, each 100µg/mL in methanol; unit: 1x1mL 4-Chlorocatechol [2138-22-9] 3,4-Dichlorocatechol 3,6-Dichlorocatechol 4,5-Dichlorocatechol [3428-24-8] 3,4,5-Trichlorocatechol 3,4,6-Trichlorocatechol Tetrachlorocatechol [ Price on request 1956.16-K-IO 2-Phenylnaphthalene, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 612-94-2 Price on request 50242 BOD Calibraton Standard Price on request