Platinum Wire in Glass Tube for Flame Testing Ends_Round Folds flat into a metal

Folds flat into a metal pocket frame and opens into a 5x linen tester with an integrated measurement scale

this plant cell model shows organelle ultrastructure and cell-wall layering for upper-level cell biology teaching

Polished non-warping wooden base with a built-in meter-scale carries a compass-box magnetometer

25-inch zinc-plated cast iron triangular tripod

this Hall's car supports dynamics work on inclined planes with weights and pulleys

Platinum Wire in Glass Tube for Flame Testing Ends_Round Folds flat into a metalPlatinum flame test wire fused into a 5 inch borosilicate glass handle, preferred over iron or nichrome because it contributes no color of its own to the flame.