US$ 209.99
5-inch base
and 100 ppm
both AC and DC simultaneously
Borosilicate crown glass prism with refractive index 1
Speed-controlled 6V motor driving two cams pumps four spring-mass systems at any chosen frequency
Round Polypropylene Test Tube Rack for 12 Mixed Tubes (4 x 25mm + 8 x 19mm) Clearance 5-inch basePolypropylene round test tube rack holding 12 tubes four at 25 mm and eight at 19 mm with 360 degree access for benchtop chemistry demonstrations and student experiments.