ECOLOGY
Secchi disc RV3087
Water Filtration Kit EI0055 The kit here introduces how water gets cleaned by building a simple filtration system and more… • set includes: 6 x filtration paper, 2 sponges, 1 x crushed granite, 1 x porcelain sand, 1 x activated carbon, 1 x quartz sand, 1 x saleratus, 1 x potasium alum, 1 x plastic hopper, 1 x plastic cover, 4 x filtration tube
A disk which can be used to monitor the water quality and photosynthesis process as part of ecological research. The size of the disk allows students to work in small groups. • disk diameter: 19 cm; string’s length: 1 m; age: 8+
Waste segregation. Wooden puzzle VG4504
Educational toy for learning how to segregate waste and for raising environmental awareness. This product has a form of a box-shaped sorter with 4 holes, where properly segregated waste should be placed. The examples of rubbish for segregation are shown on wooden tiles. To check if the task was done correctly, the colour of the container is printed on the back of each tile. The set includes dices which randomly indicate the colour, with which the container should be filled. • 13 pcs: 8 tiles with illustrations, 1 box • size: 29.5 x 12 x 8.3 cm, 1 board illustrating the containers, 1 board with holes, 2 dices • weight: 0,9 kg; material: wood; age: 3 + SETS CHEMICAL AIDS
Lab desks available in furniture section page 245
Synthetic materials – 8 types in acryl HG0112
Coal - sources and products of its processing (plexiglass) HG0122 This set presents main sources of coal and products of its processing. Small fragments of fossil coal embedded in the plexiglass, such as: lignite, hard coal, anthracite and samples of materials which can be formed by them during pyrolysis or chemical treatment processes (gas, carbon fiber, coke, ammonia, naphthalene, fertilizers, pesticides, drugs, dyes and which is often added in the production of rubber as an ingredient that reduces its hardness in the vulcanized state). • size.: 18 x 3.5 x 2.5 cm; till stock last
Petroleum - distillation and products (plexiglass) HG0121 Crude oil distillation and its products. The set contains small samples of crude oil and its derivatives formed during distillation in CDU / VDU units (atmospheric and vacuum distillation). Inside the transparent plexiglass, it is possible to see the samples of crude oil and its derivatives. The diagrams connecting the samples provide information not only about the distillation process which formed them, but also the relative volatility of the distillates. • size.: 18 x 14 x 2.5 cm; till stock last
Set of 8 pieces of different materials embedded in acrylic blocks. The individual samples were placed in transparent material in order to view the samples comfortably without fear of damaging them. The students can see up close the characteristic features of each material. There are 8 elements in the acrylic bar: ceramics, metal, glass, MDF, plastic, paper, cloth, cement. • size.: 14 x 6 x 1.5 cm • till stock last
Simple substance RV0304 Set includes: S, C, Cu, Al., Zn, Fe, Pb, Mg, Ca, SiO2, C6H6 , crystal jodine • size of box: 30 x 21 x 15 cm
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