The tetrahedral sp3 oxygen atom is use mainly to illustrate water/ice models and is found in all of our student sets and several teacher sets or is available separately.
Indigo Instruments has maintained a substantial inventory of genuine Molymod atoms & bonds for over 30 years. These parts are compatible with every set & kit we have sold since day 1. Though quality may appear expensive, no parts support from other vendors costs even more.
Use only these genuine Molymod Atoms & Bonds for full compatibility with any of our Molymod Molecular Model Sets & Molymod Molecular Model Kits.
These are solid. The bonds are a tight fit and won't come lose. I'm currently building a kit to fit my needs. I'm grateful for finding this company.
Glad we could help. For anyone wanting to replenish a model set or kit or build a custom chemical structure, our 3D Molecular Model Builder will make your task much easier.