General description These 100PCS glass test tubes with cork stoppers are perfect for a variety of uses, including DIY projects, scientific experiments, and plant growth. With a spacious quantity and convenient size, you will always have enough test tubes to meet your needs. Technical specifications Size: 15 x 100 mm Capacity: approximately 13 ml Material: low borosilicate glass Usage These versatile test tubes can be used for: Conducting scientific experiments Storing samples, candies, bath salts, and other small items Creating crafts and DIY projects Plant growth applications Other information Clear design allows for easy observation of contents Cork stoppers ensure a leak-proof and secure seal Measurement allowed error: +/- 1-3 cm