{"product_id":"99-alumina-cylindrical-crucible-without-lid-o35-50-mm-2-145-ml-1750-c","title":"99% Alumina Cylindrical Crucible without Lid, Ø35–50 mm, 2–145 mL, 1750 °C","description":"\u003ch2\u003e99% Alumina Cylindrical Crucible (Uncovered), Ø35–50 mm\u003c\/h2\u003e\u003cp\u003eUncovered cylindrical crucibles made of ≥99% high-purity alumina (99 ceramic). They are used for sintering, ashing, melting and heat treatment in muffle furnaces and high-temperature kilns. 39 sizes are available, from Ø35 × 6 mm (3 mL) to Ø50 × 100 mm (145 mL).\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e99% high-purity alumina:\u003c\/strong\u003e ultra-low impurity content and no impurity release at high temperature, so samples stay uncontaminated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat resistance:\u003c\/strong\u003e 1600 °C long-term working temperature and 1750 °C short-term maximum, with no softening or deformation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical stability:\u003c\/strong\u003e resists acids, alkalis and molten metal corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh strength and thermal shock resistance:\u003c\/strong\u003e the dense, one-piece ceramic structure resists cracking.\u003c\/li\u003e\n\u003cli\u003eSmooth, pore-free inner and outer walls resist sample adhesion and are easy to clean.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e99% high-purity alumina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eUncovered cylindrical crucible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter range\u003c\/td\u003e\n\u003ctd\u003e35–50 mm (see size options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLong-term working temperature\u003c\/td\u003e\n\u003ctd\u003e≤ 1600 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort-term max. temperature\u003c\/td\u003e\n\u003ctd\u003e1750 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e3.98 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eUsage Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePre-fire at 1000 °C for 2 hours before first use.\u003c\/li\u003e\n\u003cli\u003eHeat and cool at ≤ 5 °C\/min. Avoid sudden temperature changes.\u003c\/li\u003e\n\u003cli\u003eAvoid long-term contact with strongly alkaline melts.\u003c\/li\u003e\n\u003cli\u003eLet the crucible cool naturally. Never quench a hot crucible in cold water.\u003c\/li\u003e\n\u003cli\u003eAvoid impacts and drops.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eFor research and laboratory use only.\u003c\/em\u003e\u003c\/p\u003e","brand":"Alabsupply","offers":[{"title":"Ø35 × 6 mm, 3 mL","offer_id":68289171390684,"sku":"PUR-ACRU-35X6","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 50 mm, 35 mL","offer_id":68289171423452,"sku":"PUR-ACRU-35X50","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Ø40 × 50 mm, 40 mL","offer_id":68289171456220,"sku":"PUR-ACRU-40X50","price":10.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 60 mm, 85 mL","offer_id":68289171488988,"sku":"PUR-ACRU-50X60","price":14.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 100 mm, 145 mL","offer_id":68289171521756,"sku":"PUR-ACRU-50X100","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 65 mm, 40 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