Description
GSC International 403-1 Drying Tube U-shaped with side arms 100mm length.
This U-shaped Drying Tube with side arms is designed for laboratory use in chemistry experiments involving moisture-sensitive reactions. It is typically filled with a desiccant like calcium chloride or silica gel to trap moisture from gases entering reaction vessels. The tube’s two open ends accept corks or rubber stoppers, while the side arms allow for easy hose connections to other glassware setups. Made from high-quality laboratory glass, the drying tube ensures chemical compatibility and clear visibility of contents, making it an essential tool for controlled experimental conditions.
⚠️ Proposition 65 Warning for California Residents: WARNING: This product may expose you to chemicals including styrene and/or bisphenol A (BPA), which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. This item is not a toy. It is intended for use in educational, scientific, or professional settings only. Adult supervision is required at all times. Improper use may result in injury or damage. Always follow safety guidelines and wear appropriate protective equipment when handling.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
WHY GSC GO SCIENCE CRAZY ?

Power Up Your Science Experiments
Explore circuits, current, and magnetism with easy-to-use, reliable tools.
Shop NowFrequently Asked Questions
Shipping
Yes! We offer fast, free shipping on eligible orders within the United States.
Most orders are processed within 1–2 business days. Delivery typically takes 3–7 business days, depending on your location.
At this time, we primarily ship within the United States. For international orders, please contact our support team for assistance.
Product
Yes. Our labware and science kits are specifically designed for educational use and are trusted by schools, teachers, and homeschooling families.
Most of our kits include easy-to-follow instructions or experiment guides. If you need additional help, our support team is happy to assist.
We carry a wide range of science education tools across multiple disciplines, including:
- Labware
- Electricity and Magnetism
- Force and Motion
- Light and Sound
- Properties of Matter
- Biology
- Chemistry
- Earth Science
- Novelty Items
Our products are designed with education and safety in mind. Adult supervision is recommended for younger users, especially during experiments.
Other
We’ve been supporting science education for over 60 years, providing reliable labware and hands-on learning tools.
We accept all major credit cards and secure payment options such as Shopify Payments, PayPal, and more.
Yes! We offer a satisfaction guarantee. If you’re not fully happy with your purchase, we make returns easy.
Our friendly support team is always ready to help. Reach out via our Contact Us page or email for expert assistance.