the following 16 substances are analyzed : hcb , alpha-hch , lindane , heptachlor , aldrin , heptachlor epoxide , o , p'-dde , p , p'-dde , o , p'-tde , p , p'-tde , o , p'-ddt , dieldrin , endosulfan , beta-endosulfan and endosulfan sulfate .
C0019219
heptachlor
C0019220
heptachlor