GFS focuses on high purity solvents because we know your critical applications require accurate, reliable and reproducible restuls. GFS' products start with high quality raw materials and are quality control tested throughout the purification process to ensure the first bottle and the last bottle are the same. Products are sub-micron filtered to ensure low baseline noise and eliminate potential pump blockages. GFS' high purity solvents are application and function tested to ensure lot-to-lot consistency, for confidence you can trust.