Rare silicon sample.
Rare silicon sample.
Etched high purity silicon cube (approx. 1 1 1 cm) showing beautiful grain boundaries.
Beautiful dendritic crystalline silicon metal sample. Rare silicon sample. Please note the unit cell of graphic paper is 5mm.
Crystalline black P sealed ampoule. 10 mg of black P crystal. I do combine postage, please drop me a message.
Crystalline black P sealed ampoule. 0.1-0.11g of black P crystal. I do combine postage, please drop me a message. Please note the unit cell of the graphic paper is 5mm. Listing price is for one ampoule
High purity red P pieces lump. NOT powder. Unusual form. Purity 99.999% 1.0 gram. Alfa Aesar 10670. High quality specimen. Please note the unit cell of the graphic paper is 5mm.
Two grams antozonite pieces ampouled under argon. These deeply coloured fluorite (also called antozonite) in the ampoule contains 0.8-1.0mg trapped fluorine GAS (F2!!!) formed by radioactive damage to CaF2. As there’s no possible way to preserve a “visible” fluorine sample for element collection, ampouled antozonite is a good alternative. Some small chips of lose antozonite will also included for free, so you can crush it and have a try the smell of REAL fluorine 🙂
Beautiful titanium crystal bar made by Van Arkel-de Boer process. Crystal bar with snap ends showing complex and beautiful crystalline structure.
1.0 ml in ampoule under argon.
1.0 ml in ampoule under argon.
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