RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Biology_Entomology & Zoology Acrylic bell-in-vacuum jar with an

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

Wall-mountable beech wood draining rack measures 20 x 20 inches and holds up to 90 pieces of labware inverted for post-wash drying in chemistry labs

universal 50 x 50mm slide holders

and copper supports density

suited to fieldwork in geography units and orientation activities outside the classroom

RGB/CMY Mounted Color Filter Set, 50 x 50mm, 6-Piece Biology_Entomology & Zoology Acrylic bell-in-vacuum jar with anThree 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.