Viruses are generally produced at lower titers. It usually requires to be concentrated for storage or further application. A fast, simple, and inexpensive solution is needed to concentrate the virus and remove impurities. BioVision's PEG virus precipitation kit provides a simple, convenient, and time-saving solution for concentrating viruses without ultracentrifugation. The kit is ideal for small-scale laboratory samples or large-scale virus preparation with high yield and high virus titer. The kit is designed for concentrating of retroviruses, baculoviruses, lentiviruses and phages in cell culture media or environmental samples. The virus can be concentrated more than 100 times. Provides an optimized virus re-suspension solution, which can maximize the virus recovery rate by 40-100% according to the type and source of the virus. Non-toxic reagents are used throughout the process. Concentrated virus can be used for infection, viral DNA or RNA purification, etc.