{"id":26343,"date":"2026-09-28T16:39:59","date_gmt":"2026-09-28T13:39:59","guid":{"rendered":"https:\/\/artrestorationsupplies.gr\/?post_type=product&#038;p=26343"},"modified":"2026-09-28T16:45:15","modified_gmt":"2026-09-28T13:45:15","slug":"hanna-hi7004-%cf%81%cf%85%ce%b8%ce%bc%ce%b9%cf%83%cf%84%ce%b9%ce%ba%cf%8c-%ce%b4%ce%b9%ce%ac%ce%bb%cf%85%ce%bc%ce%b1-%ce%b2%ce%b1%ce%b8%ce%bc%ce%bf%ce%bd%cf%8c%ce%bc%ce%b7%cf%83%ce%b7%cf%82","status":"publish","type":"product","link":"https:\/\/artrestorationsupplies.gr\/en\/product\/hanna-hi7004-%cf%81%cf%85%ce%b8%ce%bc%ce%b9%cf%83%cf%84%ce%b9%ce%ba%cf%8c-%ce%b4%ce%b9%ce%ac%ce%bb%cf%85%ce%bc%ce%b1-%ce%b2%ce%b1%ce%b8%ce%bc%ce%bf%ce%bd%cf%8c%ce%bc%ce%b7%cf%83%ce%b7%cf%82\/","title":{"rendered":"Hanna HI7004 \u2013 pH 4.01 Calibration Buffer"},"content":{"rendered":"<p>Hanna calibration buffer for pH meters, with a value certified against NIST standards and stated temperature dependence. For routine calibration of pH meters and electrodes \u2014 a prerequisite for reliable pH measurements in cleaning solutions, gels and on surfaces. pH 4.01 is used as the second point for measurements in the acidic range (e.g. acidic paper). Single-use sachets are ideal in the field and always guarantee fresh solution.<\/p>\n<h4>Technical specifications<\/h4>\n<ul>\n<li>pH 4.01 at 25 \u00b0C<\/li>\n<li>Available in 230 mL, 500 mL and 1 L bottles, a 500 mL bottle with certificate of analysis (L\/C) and a box of 25 sachets \u00d7 20 mL<\/li>\n<\/ul>\n<h4>Hanna codes<\/h4>\n<ul>\n<li>230 mL: HI7004M<\/li>\n<li>500 mL: HI7004L<\/li>\n<li>1 L: HI7004\/1L<\/li>\n<li>500 mL with certificate of analysis: HI7004L\/C<\/li>\n<li>25 sachets \u00d7 20 mL: HI70004P<\/li>\n<\/ul>\n<p class=\"ars-imp\"><strong>Made to order.<\/strong> We confirm availability and delivery time before payment.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hanna pH 4.01 buffer solution for calibrating pH meters, in 230 mL, 500 mL and 1 L bottles and 25 \u00d7 20 mL sachets.<\/p>","protected":false},"featured_media":26349,"template":"","meta":[],"product_brand":[1324],"product_cat":[1084,1168,1166],"product_tag":[],"class_list":["post-26343","product","type-product","status-publish","has-post-thumbnail","product_brand-hanna-instruments","product_cat-1084","product_cat--ph","product_cat-1166","first","onbackorder","taxable","shipping-taxable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product\/26343","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\/26343\/revisions"}],"predecessor-version":[{"id":26454,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product\/26343\/revisions\/26454"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/media\/26349"}],"wp:attachment":[{"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/media?parent=26343"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_brand?post=26343"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_cat?post=26343"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/artrestorationsupplies.gr\/en\/wp-json\/wp\/v2\/product_tag?post=26343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}