The specific operation and use steps of ash tester are introduced

Ash tester mainly consists of three parts: furnace body, transmission system and temperature control system.
1. Furnace body: composed of tubular furnace body equipped with electric heating wire and multi-layer insulation cotton, both ends are open, and the axial inclination is about 5°. The larger furnace can discharge two samples at the same time and can be continuously injected.
2. Transmission system: mainly composed of motor, worm gear, worm, pulley and conveyor belt. The conveyor belt is made of heat-resistant stainless steel, and the transfer speed can be adjusted as needed to fully burn the sample.
3. Temperature control system: mainly composed of single chip microcomputer, bidirectional thyristor, digital display temperature regulator, thermocouple and other electrical components. The entire system is mounted on the front and bottom panels.
The specific operation and use steps of ash tester are introduced

Ash tester operation steps:
1. Weigh the crucible with constant weight accurately to 0.1g, and weigh the sample with the same accuracy. According to the situation, it is generally advisable to install 25g samples in a 50ml crucible for testing. The amount of sample taken depends on the size of the ash content of the sample, so that the sample can be sufficient to generate 20mg ash limit, but not more than 100g.
2, with a quantitative filter paper folded into two folds, rolled into a cone, scissors should be 5-10 mm from the end of the top part of the cut, into the crucible. The filter paper rolled into a cone shape (ignition core) is firmly inserted in the oil in the crucible, and most of the sample surface is covered.
3, when measuring the sample of water, the crucible equipped with the sample and the ignition core is placed on the heating furnace, slowly heating, so that the water slowly evaporates until the filter paper soaked in the sample can be ignited. After the kindling core penetrates the sample, it ignites and burns. The combustion of the sample shall be carried out until the dry char residue is obtained.
4. After the sample is burned, the crucible containing the residue is moved into the high temperature furnace heated to 775±25 ° C (attention should be paid to prevent sudden explosion and rush out. When possible, the crucible can be first moved into the furnace, or moved into the furnace when the temperature is low, and then increased to 775±25℃, and heated at this temperature until the residue * becomes ash (generally maintained for 1.5 to 2.0 hours).