ASTM Narrow Neck Borosilicate Glass Erlenmeyer Flask with Dual Scale Capacity:1000mL Ideal for experiments in biology

Ideal for experiments in biology

Used to crank a row of 16 cam-driven rods through a moving sine wave

Ten two-dimensional plastic geometric shapes with two each of circles

this 6-inch Alnico bar pair extends field lines visibly along the magnet body for full-class iron-filing demonstrations

5x clear views through a 3-inch optical-glass lens with a 6-inch focal length

ASTM Narrow Neck Borosilicate Glass Erlenmeyer Flask with Dual Scale Capacity:1000mL Ideal for experiments in biologyDual scale graduation (ascending and descending) supports both fill and measure and pour and measure reading during routine ASTM compliant volumetric work.