BrandTech BRAND UV-Cuvette Disposable Spectrophotometer/Photometer Cuvettes BrandTech Ultra-Micro Cuvettes. During the heating and cooling process the gas molecules in a liquid mix and create a pressure that determines the pressure inside the cuvette causing the cuvette to expand or contract ultimately changing the density of the sample. As a result the sample may be contaminated with unwanted DNA DNase or RNase. To help avoid this BrandTech designed this plastic cuvette to have an air-permeable back surface. This makes the surface rougher than glass or quartz and provides some level of scratch resistance. However they are not completely without disadvantages. As with all plastic cuvettes BrandTech UV-Cuvette Disposable Cuvettes do not have any advantages for applications involving high back pressure. Specifications for BrandTech BRAND UV-Cuvette Disposable Spectrophotometer/Photometer Cuvettes BrandTech 759230 Ultra-Micro Cuvettes: Description: Ultra-Micro Cuvettes WindowHeight mm: 15 BrandTechNo.: 759230 Unit: Pack of 500 Pathlength: 10 mm Volume Range Ultra-Micro 8.5 mm: 70 850 L Volume Range Ultra-Micro 15 mm: 70 550 L Volume Range Semi-Micro: 1.5 3.0 mL Volume Range Macro: 2.5 4.5 mL (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine BrandTech products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Spectrophotometers with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for BrandTech Spectrophotometers. 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 BrandTech BRAND UV-Cuvette Disposable Spectrophotometer/Photometer Cuvettes BrandTech Ultra-Micro Cuvettes 759230/ 47743-840 we carry a full complement of Spectrophotometers as well as other product offerings from BrandTech. We also carry a full line of BrandTech accessories to help meet your laboratory and scientific needs. For a complete selection of BrandTech Spectrophotometers please visit our BrandTech page. For more brand name Spectrophotometers please visit our Spectrophotometers store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. BrandTech BRAND UV-Cuvette Disposable Spectrophotometer/Photometer Cuvettes BrandTech 759230 Ultra-Micro Cuvettes