Designed to accurately deliver 1mL of solution, with a tolerance of ±0.006mL, volumetric pipets are commonly used to provide accurate, repetitive sample volumes, or to make standard strength solutions and sample sizes. Each Pipette has its own color code, to separate it from the others. This pipet is color coded with Blue, and is batch certified. Class A glassware has the highest standards, when it comes to their construction and the accuracy of the graduations. They comply with the volumetric tolerances prescribed in ASTM E-969, and are marked with the letter “A” to signify this compliance. It’s tolerance is two times smaller than that of Class B glassware. **The picture is representative of how the color coding appears on the pipet. Actual color will vary depending on the size (in mL) of the pipet.