The other type is known as a thistle tube or safety funnel. This style is designed to work mainly with larger flasks such as the 1000ml Erlenmeyer flask or filtering flask. Graduated Cylinders Graduated cylinders are handy for accurate measurements of small volumes of liquid that cannot be done with beakers and flasks. A borosilicate glass graduated cylinder should be used instead of other materials such as polypropylene and TPX if you are going to use oxidizing materials and certain hydrocarbons which can cause plastic to cloud. Test Tubes, Glass Tubing .
Test tubes are among the most common of requirements for lab supplies.
The 18x150mm is considered the standard lab test tube size. A culture tube is a test tube without a lip. Volumetric Flasks . Volumetric flasks are used in analytical chemistry to produce accurate solutions. However, they can be used as decorative glassware around the home for holding salad dressings, etc.