Walter Stern Borosilicate Glass Balls. The appropriate size will depend on the type of apparatus used the temperature the solution or any combination of conditions. Borosilicate glass is a relatively inexpensive virtually maintenance-free material usually consisting of a few small bubbles surrounded by a uniform layer of glass. The easiest method to obtain the 102E Borosilicate Glass Balls is through a glass furnace. After the forming process is complete the glass ball is fired in a few seconds giving rise to a brown ball. Borosilicate glass is also much more likely to absorb acids or bases making it an excellent choice for the storage of chemical solutions. The removal of the gaskets provides excellent access to the inside of the ball. Keeping the gasket in place will prevent chemical attack to the ball. Specifications for Walter Stern Borosilicate Glass Balls 102E : Diameter mm: 5 Unit: Pack (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Walter Stern products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Laboratory Consumables with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Walter Stern Laboratory Consumables. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Walter Stern Borosilicate Glass Balls 102E/ 26396-636 we carry a full complement of Laboratory Consumables as well as other product offerings from Walter Stern. We also carry a full line of Walter Stern accessories to help meet your laboratory and scientific needs. For a complete selection of Walter Stern Laboratory Consumables please visit our Walter Stern page. For more brand name Laboratory Consumables please visit our Laboratory Consumables store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Walter Stern Borosilicate Glass Balls 102E