Portable water purifier is a device designed to purify water and make it safe for drinking while on-the-go. These devices are compact, lightweight, and easy to use, making them ideal for outdoor activities such as camping, hiking, and backpacking. Portable water purifiers come in various forms, including pump filters, gravity-fed filters, and straw filters. The filtration technology used can vary from activated carbon to ceramic filters, to UV light treatment or chemical treatments. These technologies can remove bacteria, viruses, protozoa, and other contaminants from the water, making it safe for consumption. The portable water purifiers typically have a capacity of a few hundred milliliters to a few liters, and can filter water from natural sources such as rivers, lakes, and streams. They are an essential tool for anyone who spends time in the outdoors and needs access to clean drinking water. It is important to follow the instructions provided by the manufacturer when using a portable water purifier to ensure proper use and effectiveness.