Rasayan Test Tube made from Natural Glass with / without RIM

Rasayan test tubes made from natural glass can come with or without a rim. Here's an explanation of each: Test Tubes with Rim: Test tubes with a rim have a small, raised edge at the opening of the tube. This rim serves several purposes: It provides a secure grip for handling the test tube, especially when inserting or removing stoppers or other accessories. It helps prevent slippage when the test tube is placed in a rack or holder. It allows for easier pouring or transferring of liquids into and out of the test tube without spilling. Test Tubes without Rim: Test tubes without a rim have a smooth, rounded edge at the opening of the tube. While they lack the additional grip provided by a rim, they still serve the basic function of containing liquids and facilitating experiments. Test tubes without rims may be preferred in certain applications where the presence of a rim could interfere with specific experimental procedures or where a smoother surface is desired. Both types of test tubes, with or without rims, are commonly used in laboratories for a variety of purposes such as mixing, heating, and storing small quantities of liquids or solids. The choice between test tubes with or without rims often depends on personal preference and the specific requirements of the experiment or procedure being performed.