{"id":8946,"date":"2020-09-26T21:10:51","date_gmt":"2020-09-26T13:10:51","guid":{"rendered":"https:\/\/cuvet.co\/?post_type=product&#038;p=8946"},"modified":"2026-05-29T10:07:46","modified_gmt":"2026-05-29T02:07:46","slug":"c573-crucible-cover-for-20ml-conical-crucible-dia-xh-46x6mm-99-pure-alumina-5pc-ea","status":"publish","type":"product","link":"https:\/\/cuvet.co\/fr\/c573-crucible-cover-for-20ml-conical-crucible-dia-xh-46x6mm-99-pure-alumina-5pc-ea\/","title":{"rendered":"C573, Crucible Cover, for 20ml Conical Crucible, Dia.xH: 46x6mm, 99% Pure Alumina (5pc\/ea)"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text css=&#8221;.vc_custom_1601120292433{background-color: rgba(238,238,34,0.57) !important;*background-color: rgb(238,238,34) !important;border-radius: 4px !important;}&#8221;]<\/p>\n<blockquote><p><strong>Note: <\/strong><\/p>\n<ul>\n<li>The cover is used to <strong>prevent dust only<\/strong>, not able to seal the crucible very tight! Please consider before ordering.<\/li>\n<li>Alumina crucible is <strong>sensitive to thermal shock<\/strong>. So it is important to keep a <strong>slow temperature change rate<\/strong> and even heating during the process. Check below instructions.<\/li>\n<\/ul>\n<\/blockquote>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1586914821062{margin-top: 20px !important;margin-bottom: 20px !important;}&#8221;][vc_column width=&#8221;2\/3&#8243; offset=&#8221;vc_col-lg-6 vc_col-md-7&#8243;][vc_single_image image=&#8221;8911&#8243; img_size=&#8221;350&#215;350&#8243; alignment=&#8221;center&#8221; style=&#8221;vc_box_shadow_3d&#8221;][\/vc_column][vc_column width=&#8221;1\/3&#8243; offset=&#8221;vc_col-lg-6 vc_col-md-5&#8243;][vc_single_image image=&#8221;8932&#8243; img_size=&#8221;350&#215;350&#8243; alignment=&#8221;center&#8221; style=&#8221;vc_box_shadow_3d&#8221; label=&#8221;&#8221;][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1600681028144{margin-top: 40px !important;}&#8221;][vc_column][vc_column_text]<div id=\"footable_parent_8944\"\n         class=\" footable_parent ninja_table_wrapper loading_ninja_table wp_table_data_press_parent semantic_ui \">\n                    <h3 class=\"table_title footable_title\">Conical Crucible Cover<\/h3>\n                        <table data-ninja_table_instance=\"ninja_table_instance_0\" data-footable_id=\"8944\" data-filter-delay=\"1000\"            id=\"footable_8944\"\n           data-unique_identifier=\"ninja_table_unique_id_3947230062_8944\"\n           class=\" foo-table ninja_footable foo_table_8944 ninja_table_unique_id_3947230062_8944 ui table  nt_has_lightbox ninja_search_right nt_type_legacy_table selectable striped compact vertical_centered  footable-paging-right ninja_table_pro\">\n                    <caption>Alumina Crucibels - Conical Crucible Cover<\/caption>\n                <colgroup>\n                            <col class=\"ninja_column_0 \">\n                            <col class=\"ninja_column_1 \">\n                            <col class=\"ninja_column_2 \">\n                            <col class=\"ninja_column_3 \">\n                            <col class=\"ninja_column_4 \">\n                    <\/colgroup>\n        <thead>\n<tr class=\"footable-header\">\n                                                                                        <th scope=\"col\"  class=\"ninja_column_0 ninja_clmn_nm_woo_product_image \">Image<\/th><th scope=\"col\"  class=\"ninja_column_1 ninja_clmn_nm_woo_posttitle \">Name<\/th><th scope=\"col\"  class=\"ninja_column_2 ninja_clmn_nm_woo_product_price \">Price<\/th><th scope=\"col\"  class=\"ninja_column_3 ninja_clmn_nm_woo_product_quantity \">Quantity<\/th><th scope=\"col\"  class=\"ninja_column_4 ninja_clmn_nm_woo_product_buy \">Buy<\/th><\/tr>\n<\/thead>\n<tbody>\n\n<\/tbody><!--ninja_tobody_rendering_done-->\n    <\/table>\n    \n    \n    \n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1588645149741{margin-top: 20px !important;margin-bottom: 20px !important;}&#8221;][vc_column][vc_custom_heading text=&#8221;Alumina Crucible User Instructions&#8221; font_container=&#8221;tag:h2|font_size:28|text_align:center|color:%230a0a0a&#8221; google_fonts=&#8221;font_family:Montserrat%3Aregular%2C700|font_style:700%20bold%20regular%3A700%3Anormal&#8221; link=&#8221;||target:%20_blank|&#8221;][vc_column_text]<\/p>\n<ol>\n<li>Place the crucibles in an oven at <strong>105\u00b0C for 120 minutes<\/strong> to remove its moisture before using them for the first time.<\/li>\n<li><strong>Do not use<\/strong> gasoline blowtorches, acetylene welding torches, or alcohol blowtorches to heat the crucibles directly to prevent inconsistent heating of the container to cracks.<\/li>\n<li>Heating or cooling should be in control and not too fast. The temperature change below 1200\u2103 should be <strong>&lt; 5\u2103\/min<\/strong>, and the temperature change above 1200\u2103 should be <strong>&lt; 4\u2103\/min<\/strong>.<\/li>\n<li>It is recommended to <strong>keep the furnace power on to during cooling<\/strong>. If the power is switched off at high temperature, the cooling rate will be too fast in the early stage of the cooling process, which may cause the crucibles to crack.<\/li>\n<li>The distance between the crucibles and the heating element (such as graphite tube, silicon molybdenum rod or heating wire, etc.) should be <strong>&gt; 2cm<\/strong>.<\/li>\n<li>The bottom of the large crucibles should not be in direct contact with the bottom of the furnace. It is recommended to use <a href=\"https:\/\/cuvet.co\/alumina-footpad\/\"><strong>alumina footpads<\/strong><\/a> or other temperature-resistant materials to raise the crucibles (as shown in the figure below) for air convection.<\/li>\n<\/ol>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row images=&#8221;6322,6324,6326&#8243; img_size=&#8221;full&#8221; onclick=&#8221;custom_link&#8221; custom_links_target=&#8221;_blank&#8221; mode=&#8221;horizontal&#8221; speed=&#8221;5000&#8243; slides_per_view=&#8221;3&#8243; autoplay=&#8221;&#8221; hide_pagination_control=&#8221;yes&#8221; hide_prev_next_buttons=&#8221;yes&#8221; partial_view=&#8221;&#8221; wrap=&#8221;&#8221; custom_links=&#8221;#E-8_aHR0cHMlM0ElMkYlMkZjdXZldC5jbyUyRnN0YW5kYXJkLTEwbW0tbGlkLTQtd2luZG93LXF1YXJ0ei1jdXZldHRlLXFsNGhmJTJGJTJDaHR0cHMlM0ElMkYlMkZjdXZldC5jbyUyRnN0YW5kYXJkLWN1dmV0dGUtNS1jbGVhci13YWxscy1xczVoZiUyRiUyQ2h0dHBzJTNBJTJGJTJGY3V2ZXQuY28lMkZ1di12aXMtc3BlY3Ryb3Bob3RvbWV0ZXItY3V2ZXR0ZS1zY3Jldy1xczJocjA1JTJG&#8221; title=&#8221;&#8221;][vc_column][vc_custom_heading text=&#8221;Alumina Footpad&#8221; font_container=&#8221;tag:h2|font_size:28|text_align:center|color:%230a0a0a&#8221; google_fonts=&#8221;font_family:Montserrat%3Aregular%2C700|font_style:700%20bold%20regular%3A700%3Anormal&#8221; link=&#8221;url:https%3A%2F%2Fcuvet.co%2Falumina-footpad%2F||target:%20_blank|&#8221;][vc_images_carousel images=&#8221;7634,7636,7638&#8243; img_size=&#8221;full&#8221; onclick=&#8221;link_no&#8221; slides_per_view=&#8221;3&#8243; hide_pagination_control=&#8221;yes&#8221; hide_prev_next_buttons=&#8221;yes&#8221;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>This alumina crucible cover comes in a package of 5pcs for each quantity.<\/p>\n<ul>\n<li>&gt; 99% High Purity Alumina Material<\/li>\n<li>Capable of withstanding temperatures up to 1600\u00b0C (2900\u00b0F)<\/li>\n<\/ul>\n","protected":false},"featured_media":8932,"comment_status":"open","ping_status":"closed","template":"","meta":{"ub_ctt_via":""},"product_brand":[2232],"product_cat":[123,393,410,408,392],"product_tag":[463,464],"class_list":["post-8946","product","type-product","status-publish","has-post-thumbnail","product_brand-cuvet-co","product_cat-products","product_cat-alumina-crucibles","product_cat-conical-crucible-cover","product_cat-cover-for-alumina-crucible","product_cat-crucibles","product_tag-alumina-crucible-cover","product_tag-alumina-crucible-round-cover","product_shipping_class-weighted-supplies","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/product\/8946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/comments?post=8946"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/media\/8932"}],"wp:attachment":[{"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/media?parent=8946"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/product_brand?post=8946"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/product_cat?post=8946"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/cuvet.co\/fr\/wp-json\/wp\/v2\/product_tag?post=8946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}