Assorted Steel Spring Set Disposable_Disposable 5% accuracy in a fully

5% accuracy in a fully enclosed plastic case

Designed for parallel titration

Built-in launch-height scale on a 21-inch loop apparatus lets students release a 0

and arid environment survival features for ecology and animal behavior teaching

Rotary pipette stand holds 94 pipettes vertical with an open-bottom base for rapid draining after washing in high-throughput glassware cleanup

Assorted Steel Spring Set Disposable_Disposable 5% accuracy in a fully150 spring assortment mixing compression and extension types, lengths from 15mm to 300mm, for open ended exploration of Hooke's law, simple harmonic motion, and stored potential energy.