There are two instruments, with 6 or 10 places, to measure the biochemical oxygen demand (B.O.D.) using the manometric test method. Five different graduated scales with the following ranges are supplied:

      A  0 ÷ 1000 mg/l  O₂
      B  0 ÷ 600 mg/l  O₂
      C  0 ÷ 400 mg/l  O₂
      D  0 ÷ 250 mg/l  O₂
      E  0 ÷ 90 mg/l  O₂

Noiseless and compact, they are supplied with bottles and related manometric tubes, caps, rubber quivers and one set of 5 scales for every bottle. Power supply: 220V / 50 Hz (others on request).