25ml Shellbach Glass Burette - Class A - PTFE Stopcock - Eisco Labs This premium quality Shellbach burette has a white backing to allow for the highest accuracy in measuring clear liquids. It measures 24" in length and has a PTFE stopcock for controlling the flow of liquids. Graduations are marked in blue for ease of reading. Product Details BrandEiscoManufacturerEiscoMpnCH0241J 25ml Shellbach burette with blue graduationsAccuracy as per DIN 12700, ISO 385.Class A - Capacity 25mlSub. Div. 0.10ml Tolerance 0.05mlPremium quality glass with white backing to provide maximum accuracy in measuring colorless fluids24"in length Check out my other items. -Powered by