Krus: Perbedaan antara revisi

* [http://www.momentivequartz.com/en/crucibles.htm Momentive Performance Quartz, Inc - Manufacturer of Quartz Crucibles] {{Webarchive|url=https://web.archive.org/web/20080919152130/http://www.momentivequartz.com/en/crucibles.htm |date=2008-09-19 }}

* [http://www.intellectassociates.com/graphitecrucibles.asp Intellect Associates - Manufacturers & Exporters of Graphite Crucibles] {{Webarchive|url=https://web.archive.org/web/20081010010349/http://www.intellectassociates.com/graphitecrucibles.asp |date=2008-10-10 }}

* [http://www.b-jenterprises.com/scientific_labratoryProducts.php Metal Technology - a manufacturer of crucibles] {{Webarchive|url=https://web.archive.org/web/20080317134929/http://www.b-jenterprises.com/scientific_labratoryProducts.php |date=2008-03-17 }}

* [http://www.crscientific.com/porcelainware.html CR-Scientific: Catalog: Porcelain ware & accessories: Crucibles] {{Webarchive|url=https://web.archive.org/web/20080704185725/http://www.crscientific.com/porcelainware.html |date=2008-07-04 }} shows picture of 10 ml high form and 15 ml low form porcelain crucibles and lids.