PESTAB. A report is presented by the General Referee of the Association of Official Analytical Chemists (AOAC). The present status of work on the following selected topics is given: alachlor and propachlor, aluminum phosphide, atomic absorption spectrometry, benomyl, bensulide, bromacil and lenacil, bromoxynil, chlorophenoxy herbicides, chloroxuran, dicamba, fluchloralin, methazole, metribuzin, nitroasmines, oryzalin, pentachloronitrobenzene, physical properties of pesticides, propanil, rodenticides, sampling of pressurized cans, thiocarbamate herbicides, trifluralin, and benefin. It is recommended that the isomer specific assay of ester and salt formulations of 2-methyl-4-chlorophenoxy acetic acid (MCPA) and 2,4,5-trichlorophenoxy acetic acid (2,4,5-T) by HPLC be adopted as the official first action method. An interim first action GLC method for bromoxynil was also approved.