DI Water (ASTM TYPE II), 4L, is laboratory-grade purified water ideal for applications where high purity is required but ultra-pure water is not necessary. Meeting ASTM Type II specifications, this water is purified to remove common contaminants but is not as strictly filtered as ASTM Type I water. It is commonly used in laboratory procedures like preparing buffers, reagents, and solutions for general scientific applications. The 4-liter size is convenient for smaller laboratories or those with lower water requirements, providing a cost-effective solution for day-to-day research without compromising water quality.