{"id":31229,"date":"2023-07-19T13:50:36","date_gmt":"2023-07-19T11:50:36","guid":{"rendered":"http:\/\/fovsrl.com\/?post_type=product&#038;p=31229"},"modified":"2024-12-09T16:11:09","modified_gmt":"2024-12-09T15:11:09","slug":"natural-reference-stone","status":"publish","type":"product","link":"https:\/\/fovsrl.com\/en\/product\/packaging-and-measuring-instruments\/optical-and-measuring-instruments-en\/natural-reference-stone\/","title":{"rendered":"Natural reference stone"},"content":{"rendered":"<p>Testing stones to determine silver and gold content. Rub the tester tip on the item to be tested, then pour a few drops of acid solution to determine the precious metal content. If the title is correct the filing created rubbing on the stone will stay on the stone, otherwise the acid will melt it.<\/p>\n<p>Size: 100x50x10 mm<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Testing stones to determine silver and gold content. Rub the tester tip on the item to be tested, then pour a few drops of acid solution to determine the precious metal content. If the title is correct the filing created rubbing on the stone will stay on the stone, otherwise the acid will melt it. [&hellip;]<\/p>\n","protected":false},"featured_media":35635,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[3881],"product_tag":[],"class_list":{"0":"post-31229","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-optical-and-measuring-instruments-en","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Natural reference stone - Fov srl<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fovsrl.com\/en\/product\/packaging-and-measuring-instruments\/optical-and-measuring-instruments-en\/natural-reference-stone\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Natural reference stone - Fov srl\" \/>\n<meta property=\"og:description\" content=\"Testing stones to determine silver and gold content. Rub the tester tip on the item to be tested, then pour a few drops of acid solution to determine the precious metal content. If the title is correct the filing created rubbing on the stone will stay on the stone, otherwise the acid will melt it. 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