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Big demonstration Electroscope
Quick spin function with press and hold pulse key
One end features a flat end blade spatula with a slightly bent up edge
Double Side Black PVC Dots
Premium Quality: Magnetic Marbles is made of high-grade construction all the way through
Moh's Hardness Crystalline Form Safety Essentials Big demonstration ElectroscopeHoused in a compartmented collection box, and an identification list is included. 9 numbered samples, 1" x 1" streak plate magnet glass slide copper strip. Minerals: Talc, Selenite, Calcite, Fluorite, Apatite, Microcline, Quartz, Topaz, Corundum All samples are pure crystalline forms to ensure accurate test results. You can also perform other physical properties tests with the included materials. If you need custom order with different sizes design,
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