Urinalysis Demonstration Fluid with Phosphates, 500mL Glass Funnels_Dropping Funnels Straight-pattern glass key stopcock in

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

5 mm inner profile

the deeper body extending the visible refraction path for ray-box and Snell's law refraction studies

Pack of 10 natural bark cork stoppers in Size 13 measures 24mm in length for sealing laboratory vessels and chemistry apparatus

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

Urinalysis Demonstration Fluid with Phosphates, 500mL Glass Funnels_Dropping Funnels Straight-pattern glass key stopcock inPhosphate spiked 500mL of urinalysis demonstration fluid, simulating elevated phosphate urine for pH, color, and clarity testing during clinical laboratory technique training without real samples.