Urinalysis Demonstration Control Fluid, 500mL Included_Stopcock demonstrating mechanical-to-electrical energy conversion as

demonstrating mechanical-to-electrical energy conversion as the crank lights the bulb

25-inch metal frame and end hooks

this acrylic rectangular cell lets students compare refractive indices across media in ray-box experiments

Scoliodon shark model demonstrates cartilaginous fish anatomy

Walks students through four-stroke diesel operation on a 16-inch hand-cranked model

Urinalysis Demonstration Control Fluid, 500mL Included_Stopcock demonstrating mechanical-to-electrical energy conversion asUsed as the negative control reference in urinalysis technique demonstrations, this 500mL bottle of demo control fluid lets students practice pH, color, and albumin testing without real urine.