Description
GSC International 305 Cartesian Diver Apparatus, Single Glass, 1/2" Height X 3/8" Top 9/32" Bottom
This handblown, 2.5” tall Cartesian diver is sold as a replacement part for our Cartesian Diver Apparatus with Cylinder Set (#305-1).
Make science class fun again with the GSC International 305 Cartesian Diver! This little guy is your personal pocket-sized science lab, ready to demonstrate the coolest physics principles right at your fingertips.
Just fill it up, give it a squeeze, and watch the diver go crazy - up and down, up and down. It's a mesmerizing way to explore buoyancy, density, and pressure in the most hands-on, interactive way.
Perfect for curious kids and science nerds of all ages, this affordable, super simple toy packs a punch. No tedious setup, no confusing instructions - just pure educational entertainment. Bring the wonder of discovery back into your day with the GSC International 305 Cartesian Diver!
⚠️ 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.
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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.