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| Product | Description | |
|---|---|---|
| PROF BUNSEN (MC) - EXPANDING SPHERES GIGANTIC | This is truly an amazing absorption demonstration! Grow gigantic water spheres in hours! Pop the 15 mm soft spheres in water and in 48 - 72 hours (2 - 3 days) you will have gigantic water gel spheres up to 80 mm in diameter! And as they contain 98% water, the clear spheres will be invisible in water. Add food colouring to the water (3 drops per 250 ml water) to produce coloured water spheres. Leave them out of the water and they'll shrink back to the original size (due to evaporation), then recycle them by expanding in water again. They make great decorations in flower vases but beware, no one can resist the amazing slippery gel feel! Teaching tips: * Note the inverted image when you hold the expanded sphere up - similar to the image produced in the human eye. Use the sphere as A lens in optical experiments. * Have students determine the increase in mass, diameter and volume [ V = 4 / 3 (pi)r 3 ] Included: 70 grams of 15 mm spheres (~ 25 spheres). Teach: super absorbent polymers, gels, optical density, osmosis Safety: Made from non-toxic super absorbent polymer, these spheres are NOT classified as TOYS. We recommend adult supervision. MSDS below or click here. (Also see our Large Expanding Spheres and Expanding Cubes.) Code: PBSM45. Suppliers to schools & laboratories of science equipment & laboratory grade chemicals. | .jpg) Science & Lab Supplies NZ |
| PROF BUNSEN (MC) - GHOULISH EXPANDING EYES | Grow A horror product! The soft 12 mm diameter eyeballs will expand to 42 mm slimy, slippery eyeballs when placed in water. The expansion will take approximately 8 hours. When dehydrated they will shrink back to the original size, but this should take A number of days depending on the ambient temperature. Included: 6 eyeballs Teach: super absorbent polymers, hydrogels, osmosis Safety: Made from non-toxic super absorbent polymer, these eyeballs are NOT classified as TOYS. We recommend adult supervision. (Also see our Gigantic Expanding Spheres and Glow Expanding Beads) Code: PBSM49. Suppliers to schools & laboratories of science equipment & laboratory grade chemicals. | Science & Lab Supplies NZ |
| PROF BUNSEN (MC) - GLOW IN THE DARK EXPANDING BEADS | The tiny 3 mm beads will swell up and expand to 18 mm when they are placed in water. This takes approximately 6 hours. Each bead will hold over 10 times its weight in water. They are ideal for parties and can be placed in vases and bowls. When the lights go out the beads cast an eerie glow. Included: 10 grams of 3 mm beads (+500 beads). Teach: super absorbent polymers, gels, optical density, osmosis Safety: Made from non-toxic super absorbent polymer, these spheres are NOT classified as TOYS. We recommend adult supervision. (Also see our Large Expanding Spheres and Expanding Cubes.) Code: PBSM48. Suppliers to schools & laboratories of science equipment & laboratory grade chemicals. | Science & Lab Supplies NZ |
| PROF BUNSEN (MC) - SUPER ABSORBENT POLYMER (SUPER SLURPER) | The same powder found in disposable baby nappies will teach osmosis and super absorbance instantly. You can simply reverse the process by sprinkling table salt on the gel. Contents: 100g polymer powder. Age: 6+ Code: PBSM14. Suppliers to schools & laboratories of science equipment & laboratory grade chemicals. | Science & Lab Supplies NZ |
| Sodium Metabisulphite | Sodium Metabisulphite is an inorganic compound composed of sodium, sulphur and oxygen. it is commonly used in food and drink as a preservative and stabiliser and is popular in wine and brewing processes as a steriliser and anti-oxidant. Sodium Metabisulphite also has uses in industrial applications such as cleaning and homecare products. As an antibacterial its applications include purifying water and cleaning water pipes and reverse osmosis membranes in desalination equipment. Grades: High purity food and Technical. Pack Sizes: MOQ is 1 pallet/1mt - We don't supply small quantities, Norkem supply bulk order quantities with CIF delivery- Norkem your first link in the chemical chain. |  |
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