Plastic body: The inst ent shell is made of excellent Plastic material, which has good toughness and can be used in different environments. Product components: This inst ent is mainly made of a solution box, an electrode, a switch, lamp sockets, bulbs, wires and other components, which are practical and practical. For chemistry lesson: This inst ent can be used to efficiently detect the conductivity properties of electrolyte solutions commonly used in chemistry lessons of middle school. 6pcs wire clamps: This set is equipped with 6pcs wire clamps with a simple design that makes it easy to install and detect LED indicator: LED lights up when it comes to a strong electrolyte solution. In the case of a weak electrolyte solution, the LED lights up one to two. LED will not light up when it comes to an electrolyte-free solution.<br><br>Technical data: Product type: Microsolution conductivity tester. Material: Plastic Color: As shown<br><br>Package Contents: 1 x Solvent Conductivity Tester Caution: 1. After use, rinse the electrodes with distilled water, air dry and stored in the box. 2. The tool should be stored in a cool and dry place.<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.