{"id":27796,"date":"2026-09-28T18:08:18","date_gmt":"2026-09-28T15:08:18","guid":{"rendered":"https:\/\/artrestorationsupplies.gr\/?post_type=product&#038;p=27796"},"modified":"2026-09-28T18:11:54","modified_gmt":"2026-09-28T15:11:54","slug":"lineco-ph-testing-pen-%ce%bc%ce%b1%cf%81%ce%ba%ce%b1%ce%b4%cf%8c%cf%81%ce%bf%cf%82-%ce%b5%ce%bb%ce%ad%ce%b3%cf%87%ce%bf%cf%85-ph-%cf%87%ce%b1%cf%81%cf%84%ce%b9%ce%bf%cf%8d","status":"publish","type":"product","link":"https:\/\/artrestorationsupplies.gr\/en\/product\/lineco-ph-testing-pen-%ce%bc%ce%b1%cf%81%ce%ba%ce%b1%ce%b4%cf%8c%cf%81%ce%bf%cf%82-%ce%b5%ce%bb%ce%ad%ce%b3%cf%87%ce%bf%cf%85-ph-%cf%87%ce%b1%cf%81%cf%84%ce%b9%ce%bf%cf%8d\/","title":{"rendered":"Lineco pH Testing Pen for Paper"},"content":{"rendered":"<p>A tool for quickly checking the acidity of paper and board. The line turns purple on pH-neutral materials; clear or yellow indicates acidic material. For longevity a pH of 6.0 or above is recommended, and 7.0 or above for preservation over centuries.<\/p>\n<p><strong>Technical specifications<\/strong><\/p>\n<ul>\n<li>Purple: neutral pH<\/li>\n<li>Clear\/yellow: acidic<\/li>\n<li>Not recommended for unbuffered acid-free papers<\/li>\n<li>Unreliable results on coloured, coated or unbuffered materials<\/li>\n<li>Manufacturer: Lineco (USA)<\/li>\n<\/ul>\n<p><strong>Applications:<\/strong> Testing papers, boards and framing\/storage materials in archives, museums and frame shops.<\/p>\n<p>Lineco code: L533-0023<\/p>\n<p class=\"ars-imp\"><strong>Made to order \u00b7 imported from abroad.<\/strong> This product is ordered from the manufacturer. The price already includes shipping and import costs; we confirm the delivery time by email before payment.<\/p>","protected":false},"excerpt":{"rendered":"<p>pH indicator pen for quick testing of paper and board: purple line = neutral\/alkaline, clear or yellow = acidic.<\/p>","protected":false},"featured_media":27797,"template":"","meta":[],"product_brand":[1325],"product_cat":[1184,1181],"product_tag":[],"class_list":["post-27796","product","type-product","status-publish","has-post-thumbnail","product_brand-lineco","product_cat-ergaleia-syntirisis-archeiakou-ylikou","product_cat-syntirisi-archeiakou-vivliakou-ylikou","first","onbackorder","taxable","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product\/27796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":1,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product\/27796\/revisions"}],"predecessor-version":[{"id":27972,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product\/27796\/revisions\/27972"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/media\/27797"}],"wp:attachment":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/media?parent=27796"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_brand?post=27796"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_cat?post=27796"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_tag?post=27796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}