Kimble NEUTRAGLAS® Serum Bottles are made from a Borosilicate Glass with unique properties. It has the highest resistance to chemical attack of any known commercially available glass. This glass is ideal for the packaging, storage and application of Injectable and Parenteral solutions requiring utmost purity. NEUTRAGLAS® Serum Bottles have a high resistance to thermal and mechanical shock. Kimble NEUTRAGLAS® Serum Bottles meet or exceed U.S.P. Specifications for Type I Glass Containers.