คุณลักษณะ

• The use of a superabsorbent cloth makes it easy to see changes in the color of the indicator.
• Can be experimented with common power supplies.
• It is a device that observes the movement of ions by placing a highly absorbent cloth on an observation bridge and placing acid and alkali on both ends of the bridge to apply electric charge.
• Using BTB solution, ion migration can be clearly observed.