Heptachlor-exo-epoxide (Iso B) 10µg/mL in CY, 10ml Back Catalog number: L14101000CY Availability: In the manufacturer's stock Price on request - + Recommended EPA-8280CS Cleanup Standard Solution, 1.2ml, nonane Price on request 54011 Total Kjeldahl Nitrogen as N Price on request 95166 Aroclor 1254 Price on request