Manual Knapsack Sprayer is a manually operated trigger sprayer to spray sanitizer and sanitize large areas. The pressure pump of it ensures excellent functionality and long operational life. Its pressure pump sprays large quantities of sanitizer and covers a larger area in a single spray. In addition, it can be easily carried on the back and can be used to sanitize hospitals, public places, and even houses. It can also be used to sanitize schools, offices, public places, malls, factories, and industries.