Class B Burette with Ribbed Outlet (No Stopcock), 50mL, White Graduations, Borosilicate Glass Subcategory_Energy Transfer Three-inch raw microcline hand sample

Three-inch raw microcline hand sample reveals potassium feldspar crystalline habit with salmon-pink to green coloration for silicate mineralogy

the f/2 geometry combining a wide light-gathering face with moderate throw for projection and image work

Eighteen-inch 25-watt T8 germicidal UV fluorescent replacement tube

Spare Bell for above

and bottom-mounted Secchi disc

Class B Burette with Ribbed Outlet (No Stopcock), 50mL, White Graduations, Borosilicate Glass Subcategory_Energy Transfer Three-inch raw microcline hand sampleClass B burette in heavy duty borosilicate glass holds 50mL with ribbed outlet and no stopcock for use with pinch clip flow control.