Hello guys, welcome to Teska Technologies Private Limited. So this is an COD Digestation apparatus. So these COD apparatus are used in various laboratories and pharmaceutical industries for wastewater and industrial process water monitoring and checking. So feature of this COD Digestation apparatus is it is easy to use less maintenance, digestion of samples using potassium dichromate and sulfuric acid you can do digestion of these chemicals, designed for digestion of COD test samples and multifunction dry bath heating, dry block. So these are the dry block, matter of aluminum with 15 holes of each holes of 40 mm dior. So each holes of 40 mm dior. This is a digital PID temperature control come display. So it is a PID based temperature control display. It can take temperature range up to 2500 degree Celsius, time are up to 2 hours. Samples after being digested for 2 hours can be analyzed using calorimeter or conventional diet ration method. So this is a COD digestion apparatus. Now we are going to operate this COD digestion apparatus. Now we will turn on this COD digestion apparatus. So to turn on connected to 230 volt AC mains, turn on the mains. Here PID controller displays turn on. So here we can send the temperature as per our choice. So to send the temperature press this switch along with this switch we have to press up and down key to increase or decrease the temperature. So here I am setting the temperature at 36 degree Celsius. So when this temperature reaches to 36 degree Celsius, it will automatically PID temperature control automatically varied in between the 36 degree Celsius. So you can see when it reaches the 36 degree Celsius, this load first of all turn this load. So here now it will start blinking after some second. So when it will you can see here this load switch is blinking, it means whenever the temperature is increasing it will blink. So when it reaches to 36 degree Celsius, after this PID controller will maintain the temperature in between 36 degree Celsius. So you can see temperature continuously increasing and when it will reach nearby 36 degree Celsius, this blinking of load switch will take more time gap. So here the time gap is very less, it will blinking very fast but when it will reach nearby 36 degree Celsius, the time gap of blinking of this load switch will decrease because it have to maintain the temperature at 36 degree Celsius, 36 degree Celsius. And we have a with this COD digestion apparatus, we have a S2, COD test tube. So we can place this COD test tube in this 40 dia hole and we can fill chemical in the COD digestion tube using the chemical we can perform our experiment in the chemistry lab. So it will heat up this chemical, then I fill this test tube with chemical, it will heat this chemical and it will so now temperature continuously increasing. Now the temperature it is reaching nearby 36 degree Celsius and you can see this blinking of this switch load switch will the time gap of blinking of the switches increase. It means it will maintain the temperature in between PID controller and PID controller will maintain the temperature in between the 36 degree centigrade. And you can also so now it will maintain the so here we have reached the near by 36 degree Celsius and this blinking of this load switch will take more time because time gap increase because we are near by 36 degree Celsius and you can also set the time. So by pressing this set button sorry you can change the time you can operate that this PID controller using the timer also. So for timer you have to press this up key and with this up key you have to press this key and now we can set the time. So you can set the time as per your need so it will and digest the chemical up to 2 hours. So here now it will maintain the temperature in between 36 degree Celsius. So this is all about the COD digestion apparatus. Now we are also having a stand for the COD digestion apparatus. So you can place the test tube in the this is stand so that it will not get damaged. This is the setup of this COD digestion apparatus. So how you have to set this COD digestion apparatus? First of all place this test tube and after that you have to press this tube inside it and you can place chemical as per your need and you can digest the chemical using the COD digestion apparatus. So it will get heat up you can see the surface of this test tube will become hotter. So this is all about the COD digestion apparatus. Thank you for watching this video.