Synthetic Permanent Slide Mounting Medium, 500mL Chemical_Sodium Sulfate providing the lowest-value reference in

providing the lowest-value reference in the line for low-resistance Ohm's-law and bridge work

Spare 3-inch O-ring drive belt sized to the smaller Van de Graaff pulleys

In the third activity

75 inches end-to-end with three J-shaped side ports visualizing pressure drops at the constriction

Respirometer apparatus tracks gas exchange in living cells

Synthetic Permanent Slide Mounting Medium, 500mL Chemical_Sodium Sulfate providing the lowest-value reference inSynthetic resin 500mL alternative to natural Canada balsam, the larger volume permanent mounting medium for histology and microscopy slide preparation with consistent optical clarity over time.