HANNA HI839800 Benchtop COD Test Tube Heater

The HI 839800 thermo-reactor is constructed of durable materials with a vial capacity to perform up to 25 digestions simultaneously. The reactor is equipped with 6 predifined and 2 user defined temperature profiles. Dedicated temperature profiles for COD and total phosphorous reactions at preset to 150° C. The total nitrogen analysis temperature is pre-set to 105° C.
In addition, HI 839800 features LED indicators for visual indication of power on and heating in progress.

The heater block temperature can be verified by placing a thermometer in the temperature well provided in the block. In the adjustable temperature mode ( 50 to 150° C) , the instrument can be used for digestion of other samples that require different digestion temperatures. A 3-hour timer is incorporated for applications where timed digestion is desired. When this feature is used, the beeper will sound and the unit will shut off at the end of the selected time period. The timer can also be used without the shut-off feature when operating in the infinity mode.
The reactor is provided with a thermal fuse that prevents overheating, by disabling the heater.

Specifications: 
Temperature Of Reaction selectable, 105° C or 150° C
Temperature Stability ± 0.5° C
Capacity 25 vials ( dia 16 x 100 mm, 0.6 x 3.9 " ) , 
1 receptacle for a reference thermometer with stainless steel probe
Accuracy ± 2° C ( @ 25° C/ 77° F) 
Warm Up Time approx. 30 minutes, depending on selected temperature
Operating Mode timed ( 0 to 120 minutes) or infinity mode
Timer Range 0 to 120 minutes with acoustic alarm and automatic shut-off
Block aluminum
Environment 5 to 50° C ( 41 to 122° F) 
Power Supply 100 Vac, 50/ 60 Hz; 230 Vac; 50 Hz; 250W; 2A fuse ( See Chart) 
Dimensions 190 x 300 x 95 mm ( 7.5 x 11.8 x 3.7 " ) 
Weight 4.8 kg ( 10.6 lb.)