Urinalysis Demonstration Fluid with Phosphates, 500mL Glass Funnels_Dropping Funnels Penny head solid cone stopper

Penny head solid cone stopper in borosilicate glass features 29/32 cone for sealing ground joint vessels with finger-grip top design

illustrating the fundamental mechanism behind piston engines

Single-pole double-throw switch on a demonstration base

Flat-bottom narrow-neck boiling flask in autoclavable borosilicate glass holds 3000mL for large-volume heating

Straight-pattern glass key stopcock in borosilicate glass provides controlled flow for burettes and chemistry apparatus assemblies

Urinalysis Demonstration Fluid with Phosphates, 500mL Glass Funnels_Dropping Funnels Penny head solid cone stopperPhosphate spiked 500mL of urinalysis demonstration fluid, simulating elevated phosphate urine for pH, color, and clarity testing during clinical laboratory technique training without real samples.