United Scientific

Demonstration Triple Pulley Pack of 2

Made from plate glass, with carefully ground and polished optical surfaces and cleanly ground edges. 50mm Diameter / 100mm Focal Length Pack of 3

Demonstration slide has three 20mm x 10mm gratings with 100, 300, and 600 lines per mm, mounted between glass plates. The viewing area of each section is 15mm x 10mm.

Digital Luxmeter

Wooden resonator box with tuning fork and mallet. Tuning frequency is 256 HZ (C'). Resonator box measures 18cm x 9cm x 5cm.

Thermoelectric Demonstrator

Led Array

Tubing made from fine quality flint glass for easy bending, blowing, and sealing of soft glass apparatus. Tubing is 24" long and available in various diameters. Sold per pound.

Silicone stoppers are particularly useful due to their inert and nonreactive nature. It will not impair the growth of tissue cultures and to most chemical acids and solvents. Stoppers can be steam...

Dissecting pan made of durable aluminum, with a layer of black wax. Pan measures 13" x 9.5" x 2".

Pack of 12 unglazed white porcelain streak plates, each 1" x 2" in size. Designed to test hardness of rocks and minerals. Pack of 2

Quality cork stand designed to support round-bottom flasks, beakers, dishes and more. Stand measures 120mm in diameter to securely hold round-bottom flasks from 500ml to 3000ml in capacity. Pack of 2