Polypropylene Snap Cap for 50mL Volumetric Flask, 10-Pack Capacity:2000mL the convex/concave duo letting students

the convex/concave duo letting students compare converging and diverging refraction side by side

meeting analytical purity standards for reagent use and small-volume procedures

this insulated wire keeps polarity color-coded across the mid-reach branches of small-scale breadboarded circuits

Used to detect free iodine by turning blue-black in iodimetric titrations

Cast-iron-based Gravesande ring-and-ball with a 30mm ball

Polypropylene Snap Cap for 50mL Volumetric Flask, 10-Pack Capacity:2000mL the convex/concave duo letting studentsReplacement snap caps for 50mL volumetric flasks, sized to a Size No. 3 neck for airtight storage of prepared dilutions between uses in chemistry labs.