Using this soap dispenser is easy. Just open the vandal - resistant hinged filler - top and pour in the soap that meets the viscosity and pH requirements. The tamper - resistant refill window lets you check the soap level easily. Make sure to only use soap within the recommended viscosity (100 - 2.5k mPa·s or cP) and pH (5.5 - 8.0) ranges. For maintenance, wipe the dispenser regularly with a soft cloth to keep its matte black finish looking great. Avoid using abrasive cleaners as they may damage the powder coating.