Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories Push-button engagement on a hand-cranked

Push-button engagement on a hand-cranked single-sided cone clutch

the deeper body extending the visible refraction path for ray-box and Snell's law refraction studies

Economy Hope's apparatus demonstrating the anomalous expansion of water near 4°C as thermometers at different heights register densest water sinking while colder water rises

Compact 150mm black 4mm-stackable lead with nickel-plated split-hollow pins

Greatly magnified Paramecium model reveals cilia arrangement

Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories Push-button engagement on a hand-crankedClass B burette in borosilicate 3. 3 glass holds 100mL with 0. 2mL graduations and glass key stopcock for titration and volumetric analysis.