{"product_id":"ph-testing-pen","title":"pH Testing Pen","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eWith a simple swipe of this pH testing pen you can determine whether the paper and board you are using is acidic.\u003c\/p\u003e\n\u003cp\u003eThis easy, convenient method allows you to distinguish the difference between safe (neutral or alkaline) paper and board and acidic materials.\u003c\/p\u003e\n\u003cp\u003eEasy to use, simply draw a small line on the material you wish to test. The chlorophenol red indicator solution in the pen will turn purple on any paper with a pH of 6.8 and above. A clear or yellow colour indicates the material is probably unsuitable for conservation purposes.\u003c\/p\u003e\n\u003cp\u003ePaper can be respectably long lived if pH is as low as 6.0, especially if is well made and carefully used and stored. In order to last for centuries in today’s polluted air, it must have an alkaline reserve and this usually means a pH of 7.0 or greater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e unreliable results may occur on coloured or coated papers.\u003c\/p\u003e","brand":"Conservation Supplies Products","offers":[{"title":"Default Title","offer_id":31697904500771,"sku":"PEN02","price":34.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0274\/3019\/1139\/products\/PEN02.jpg?v=1727051853","url":"https:\/\/www.conservation-supplies.com\/products\/ph-testing-pen","provider":"Conservation Supplies","version":"1.0","type":"link"}