{"title":"Opacifiers","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Calibri',sans-serif;\"\u003eOpacifiers available at Potterycrafts for altering the colour and surface of clays and glazes. Opacifiers used in the production of opaque glazes.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"potterycrafts-titanium-dioxide","title":"Potterycrafts Titanium Dioxide","description":"\u003cp\u003eTitanium Dioxide is used as a glaze opacifier. Additions of up to 10% produce a creamy white glaze with a matt or semi matt surface. 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A fine grade of Zirconia used as an opacifier for white and coloured glazes, imparting high opacity, craze resistance and stability.\u003c\/p\u003e\u003cp\u003e4-7% produces semi opaque, 8-12% full opacification.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"1","offer_id":49197101056282,"sku":"P3365-01","price":13.5,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197101089050,"sku":"P3365-05","price":51.38,"currency_code":"GBP","in_stock":true},{"title":"25","offer_id":49197101121818,"sku":"P3365-25","price":224.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Zircosil-5-Opacifier_2cacac8f-c9d6-4d05-ac14-239af0fa605a.jpg?v=1727875750"},{"product_id":"potterycrafts-rutile-oxide","title":"Potterycrafts Rutile Oxide","description":"\u003cp\u003eRutile TiO2 is a Titanium ore with an Iron impurity. As a addition in glaze (8%) it gives a buff or brown reactive colour.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Potterycrafts","offers":[{"title":"25","offer_id":49197101383962,"sku":"P3338-25","price":190.91,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197101351194,"sku":"P3338-05","price":42.47,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197101318426,"sku":"P3338-01","price":10.73,"currency_code":"GBP","in_stock":true},{"title":"0.5","offer_id":49197101416730,"sku":"P3338.5","price":9.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Rutile-Oxide.jpg?v=1728471882"},{"product_id":"potterycrafts-zirconium-oxide","title":"Potterycrafts Zirconium Oxide","description":"\u003cp\u003eZirconium Oxide is a refractory oxide with similar opacifying powers to that of Zirconium\u003c\/p\u003e\u003cp\u003eSilicate. Used extensively in the manufacture of ceramic stains.\u003c\/p\u003e\u003cp\u003eZrO2\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Potterycrafts","offers":[{"title":"25","offer_id":49197101547802,"sku":"R1026-25","price":847.18,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197101515034,"sku":"R1026-05","price":178.45,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197101482266,"sku":"R1026-01","price":43.26,"currency_code":"GBP","in_stock":true},{"title":"0.5","offer_id":49197101449498,"sku":"R1026.5","price":25.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Zirconium-Oxide.jpg?v=1722239653"},{"product_id":"potterycrafts-chromium-oxide","title":"Potterycrafts Chromium Oxide","description":"\u003cp\u003eChromium Oxide Cr2O3 is normally green in colour but in some lead, glazes will give red and yellow. A pink is produced in the presence of tin oxide. Normally additions of 1-3% is used. 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The carbonate form gives an evenly textured green glaze due to its fine particle size (3 - 7%)\u003cbr\u003e\u003c!--[if !supportLineBreakNewLine]--\u003e\u003c\/p\u003e\u003cp\u003eNOTE - when added to low solubility glaze, copper causes the solubility of the lead to be greatly increased, making the glaze unsuitable for use on vessels containing food stuff or beverage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCopper Carbonate CuCO3\u003c\/li\u003e\n\u003cli\u003e3 - 7% addition\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"0.1","offer_id":49197101875482,"sku":"P3404.1","price":8.05,"currency_code":"GBP","in_stock":true},{"title":"0.5","offer_id":49197101908250,"sku":"P3404.5","price":25.43,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197101941018,"sku":"P3404-01","price":44.51,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197101973786,"sku":"P3404-05","price":210.32,"currency_code":"GBP","in_stock":true},{"title":"25","offer_id":54994819383682,"sku":"P3404-25","price":1037.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Copper-Carbonate-Oxide.jpg?v=1722241810"},{"product_id":"potterycrafts-fine-silicon-carbide","title":"Potterycrafts Fine Silicon Carbide","description":"\u003cp\u003eSilicon Carbon Fine is a 5% addition to a glaze gives a localised reduction effect in an electric kiln. The effect requires a leadless Tin based glaze and aids colour development.\u003c\/p\u003e\u003cp\u003eCAUTION: Large quantities will cause severe blistering.\u003c\/p\u003e\u003cp\u003eSiC\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"25","offer_id":49197102006554,"sku":"P3340-25","price":253.2,"currency_code":"GBP","in_stock":true},{"title":"0.5","offer_id":49197102039322,"sku":"P3340.5","price":9.99,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197102072090,"sku":"P3340-01","price":18.88,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197102137626,"sku":"P3340-05","price":68.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Fine-Silicon-Carbide.jpg?v=1722239972"},{"product_id":"potterycrafts-fine-ilmenite-oxide","title":"Potterycrafts Fine Ilmenite Oxide","description":"\u003cp\u003eIlmenite (Fine) is used to 'seed' crystalline glazes (up to 1%).\u003cbr\u003eFeO TiO2\u003c\/p\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"1","offer_id":49197102170394,"sku":"P3324-01","price":9.02,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":54935561994626,"sku":"P3324-05","price":41.46,"currency_code":"GBP","in_stock":true},{"title":"25","offer_id":49197102235930,"sku":"P3324-25","price":194.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Fine-Ilmenite-Oxide.jpg?v=1722243578"},{"product_id":"potterycrafts-cobalt-oxide-black","title":"Potterycrafts Cobalt Oxide Black","description":"\u003cp\u003eThe most powerful colouring oxide. This oxide produces a deep blue or blue-black colour in lead and leadless glazes and a vivid blue in alkaline glazes. The presence of magnesium gives a more purple colour.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCobalt Oxide Black Co3O4\u003c\/li\u003e\n\u003cli\u003e1 - 1.5% for a deep blue black\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"0.1","offer_id":49197102563610,"sku":"P3403.1","price":15.9,"currency_code":"GBP","in_stock":true},{"title":"0.5","offer_id":49197102629146,"sku":"P3403.5","price":66.51,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197102661914,"sku":"P3403-01","price":130.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Black-Cobalt-Carbonate-Oxide.jpg?v=1722241254"},{"product_id":"potterycrafts-iron-chromate-oxide","title":"Potterycrafts Iron Chromate Oxide","description":"\u003cp\u003eThese iron oxides generally give a wide range of colours ranging from honey yellow, brownish reds, brown, black, yellow and purple dependant on firing\u003c\/p\u003e\u003cp\u003econditions. Under reducing conditions a blue colour can be obtained.\u003c\/p\u003e\u003cp\u003eIron Chromate in its coarse form it is used as a blue brick stain. The fine version (2 - 5%) exhibits a grey\/brown to black colour in glazes. In reduction conditions the colour will be blue to grey.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"POTTERYCRAFTS","offers":[{"title":"0.5","offer_id":49197102694682,"sku":"R1011.5","price":9.9,"currency_code":"GBP","in_stock":true},{"title":"1","offer_id":49197102727450,"sku":"R1011-01","price":14.41,"currency_code":"GBP","in_stock":true},{"title":"5","offer_id":49197102760218,"sku":"R1011-05","price":31.54,"currency_code":"GBP","in_stock":true},{"title":"25","offer_id":54995161416066,"sku":"R1011-25","price":127.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/Potterycrafts-Iron-Chromate-Oxide.jpg?v=1722245458"},{"product_id":"industrial-minerals-yellow-ochre-iron-oxide","title":"Potterycrafts Yellow Ochre Iron Oxide","description":"\u003cp\u003eThese iron oxides generally give a wide range of colours ranging from honey yellow, brownish reds, brown, black, yellow and purple dependant on firing conditions. 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This oxide produces a deep blue or blue-black colour in lead and leadless glazes and a vivid blue in alkaline glazes. 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