Walter Stern Shallow Form Watch Glasses. The funnels ensure that exhaust fumes vent upward and away from the user. The funnel covers and lays down the glass panes in a shallow dish thus preventing contamination of the viewing or mixing end by dust dirt or water. The small funnels at the larger funnel ends permit mixing directly on the benchtop or by infusing a colored dye to the water stream. The color of the glass is not affected by the dye lots. The funnels may be filled from outside the containment vessel with water to aid in filling small spaces. Tests have been made directly over the molded funnel a number of times. The long funnels at the bottom of each glass provide the observer with a clear funnel end from the outside in. Tests are easily performed with a spectrometer. Tests are performed in the standing half-way up through the funnel to the orifice. Samples may be ground for testing of catalysts or small molecules before use. Specifications for Walter Stern Shallow Form Watch Glasses 110-108 : Diameter mm (in.): 125 (5) Unit: Pack of 12 (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 Beakers Test Tubes Flasks & Accessories with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Walter Stern Beakers Test Tubes Flasks & Accessories. 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 Shallow Form Watch Glasses 110-108/ 66112-184 we carry a full complement of Beakers Test Tubes Flasks & Accessories 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 Beakers Test Tubes Flasks & Accessories please visit our Walter Stern page. For more brand name Beakers Test Tubes Flasks & Accessories please visit our Beakers Test Tubes Flasks & Accessories 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 Shallow Form Watch Glasses 110-108