Suitable for COD method for monitoring waste water iffluent and effluent, industrial process water and more. This instrument is used by Pollution Control Labs. Outer cabinet made of mild steel duly coated. Double walled construction with insulation for minimum heat losses increases the efficiency of the system. Aluminium Block is heated to maintain temperature upto 180 Deg. C Solid state digital temperature controller with appropriate heater & insulation selection assures uniformity of heating in all the samples. Selectable timer upto 120 min. with alarm is provided to set the digestion period (Refluxing). After digestion, the sample is to be analysed with either colorimetric or titrimetric method.Aluminium Block with Holes is suitable to hold 6/10/12/15 nos. COD Tubes. Supplied with Borosilicate Glass COD tubes, Air Condensers, Aluminium COD tube stand & Condenser stand.