I put my gallon of D-76 stock into eight 16oz. brown Grolsch beer bottles from my old homebrewing days, with ceramic-and-gasket clamp tops. One bottle for a 4-reel tank at 1:1, half a bottle for a two-reel tank (use the second half within a week). Matches my pace with film.
And no, I don't homebrew anymore, so no danger of mixing up the IPA with the chemicals.