1.8m Optical Bench Lab Supplies_Lab Burner Accessories this Melde's vibrating string apparatus

this Melde's vibrating string apparatus pairs an oscillator-driven string with a mass tray that adjusts tension to determine wavelength

and aqueous titrants

D-frame compact aquatic net with fine-mesh plankton netting and an integrated flat plastic handle

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

Manually-operated seismograph model that traces shock waves onto a pulled paper strip

1.8m Optical Bench Lab Supplies_Lab Burner Accessories this Melde's vibrating string apparatusSteel U section 170cm track on foot supports, equipped with five riders, six convex concave lenses spanning 10 50cm focal lengths, color filters with Young's slits, mirrors, and screens.