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For the tube test digestion of :

COD (150°C)

TOC (120°C)

Total Chromium (100°C)

Total Nitrogen (100°C)

Total Phosphate (100°C)





Chemical digestion of samples is required for the photometric determination of COD, TOC, total phosphate and total nitrogen. The required temperatures and reaction time can be selected by using the membrane keypad of the reactor RD 125. The unit works at three different temperatures (100/120/150°C) and thre pre-set reaction times (30/60/120 minutes). When digestion is complete, the reactor automatically swithes of and gives a corresponding LED indication with short beep alarm.

The RD 125 reactor is fitted with 24 holes for 16mm diameter vials. With the voltage switch on the back 230 V and 115 V are selectable.


Technical Data
Power Supply 230 V / 50-60 Hz or 115 V / 50-60 Hz
Power 550 W

Material, housing

protection grid


Block insert

Heating block






Holes in the aluminium block 24 holes, 16.2mm ± 0.2mm
Selected temp. 100 / 120 / 150 °C
Probe type Pt100 A class
Temperature stability ± 1 °C at the Pt 100
Selected time 30 / 60 / 120 minutes and continuous operation
Dimensions 248 x 219 x 171 mm
Weight 3.9 kg