RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Racks & Stands_Flask Stands Chrome-plated steel wire stand at

Chrome-plated steel wire stand at 5 x 5 x 5 inches supports flasks and beakers above alcohol burners for classroom chemistry demonstrations

tightened with an Allen wrench for constructing lattice frameworks on laboratory benches

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

holding under at least 100 Newtons of separation force after hand-evacuation of the air between them

RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Racks & Stands_Flask Stands Chrome-plated steel wire stand atThree primaries (red, blue, green) and three secondaries (cyan, magenta, yellow) sit in 50 x 50mm mounts, supporting both additive and subtractive color demonstrations in optical box setups.