{"product_id":"col-o-ring-ink-testing-books","title":"Col-o-ring Ink Testing Books","description":"\u003cp\u003eThe iconic Col-o-ring ink testing book, or “swatch book”, is designed by our friend Ana at the Well-Appointed Desk and printed by Skylab Letterpress in Kansas City, Missouri. Available in multiple formats, the Col-o-ring allows you to test, swatch, and compare fountain pen inks. The paper is 160gsm European paper from a 400-year old mill, acid-free and bright, natural white.\u003c\/p\u003e\u003cp\u003eAvailable formats include the Original Col-o-ring (100 sheets); the smaller Col-o-ring “Dipper” (50 sheets), sized to allow you to dip each sheet of paper directly into an ink bottle or sample vial; and the Col-o-ring “Oversize” (40 sheets), a 4\" × 5.5\" reporter-style pad that can be used for ink testing, swatching, art, and more.\u003c\/p\u003e\u003cp\u003eCol-o-ring books sold individually.\u003c\/p\u003e","brand":"Well-Appointed Desk","offers":[{"title":"Original","offer_id":48896707002521,"sku":"SQ4350092","price":12.0,"currency_code":"USD","in_stock":false},{"title":"Dipper","offer_id":48896707035289,"sku":"SQ8160524","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Oversize","offer_id":48896707068057,"sku":"SQ3865159","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/4239\/9641\/files\/IMG_4211.webp?v=1787035451","url":"https:\/\/shop.gentlemanstationer.com\/products\/col-o-ring-ink-testing-books","provider":"The Gentleman Stationer","version":"1.0","type":"link"}