Rimless Light Wall Borosilicate Glass Test Tube with Marking Spot, 100-Pack Subject_AP Chemistry Shows oxygenated and deoxygenated blood

Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input

Once the peak wavelength is determined

Low-iron optical glass formulation reduces color tinge in transmitted images

Portable salinity water kit determines salt concentration through conductivity testing

Rimless Light Wall Borosilicate Glass Test Tube with Marking Spot, 100-Pack Subject_AP Chemistry Shows oxygenated and deoxygenated bloodIntegral marking spot accepts grease pencil or marker for sample labeling, sold as a hundred piece bulk pack for class sets and high throughput teaching labs.