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º»Ã¼ 8157BNUMD Orion ROSS Ultra Triode pH/ATC electrode 083005MD Orion polarographic DO probe with calibration sleeve 080513 polarographic DO probe maintenance kit 970802 BOD funnel/stirrer 080360 BOD adapter 810199 ROSS solution kit (475 mL each of pH 4, 7 and 10 buffers; storage solution; cleaning solution; and pH electrode storage bottle) Electrode arm with redesigned holder Universal power adapter