Oxygen [O₂]

what we breathe; it's also the main oxidizer in combustion reactions, necessary for any sort of fire or explosions

Our molecule models are ethically 3D-printed in Corvallis, OR, USA. As the world's oldest and highest-quality molecule model makers, we pride ourselves on using high-quality filament, well-paid labor, and making as little waste as possible. Satisfaction guaranteed or your money back, no questions asked, within 30 days of delivery!

All of our molecule models are made in three standardized scales: small (75,000,000:1), medium (125,000,000:1), and large (200,000,000:1). This means that any molecules you buy from us at the same scale will be accurate in size relative to each other and to reality.