{"product_id":"cohler-superblack-pen-black-rhodium-solution-145-415","title":"Pen Plater Superblack Black Rhodium Solution","description":"\u003cp\u003e\u003cstrong\u003eCohler Superblack Pen Black Rhodium Solution\u003c\/strong\u003e produces a deeper, darker grey-black rhodium plate on gold and other precious metals than standard black pen rhodium. Formulated specifically for \u003cstrong\u003epen plating\u003c\/strong\u003e, it uses a different pH and higher concentration than bath rhodium solutions to deliver crisp two-tone accents, touch-up repairs, and uniform dark finishes. \u003cem\u003eFor professional use only.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper dark finish:\u003c\/strong\u003e Rich grey-black tone for bold contrast and modern looks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePen-plating optimized:\u003c\/strong\u003e Concentrated chemistry for fine control and localized application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable and tarnish-resistant:\u003c\/strong\u003e Suitable for high-wear accents and touch-ups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreat for two-tone work:\u003c\/strong\u003e Selective plating on rings, bezels, and textured elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile applications:\u003c\/strong\u003e Dark accents to complement black or deep-hued stones, selective two-tone effects, and restoration touch-ups on gold and other precious-metal substrates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCohler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolution Type\u003c\/th\u003e\n\u003ctd\u003ePen plating (higher concentration \/ different pH than bath rhodium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish Color\u003c\/th\u003e\n\u003ctd\u003eDeep grey-black (Superblack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains\u003c\/th\u003e\n\u003ctd\u003eSulfuric acid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Method\u003c\/th\u003e\n\u003ctd\u003eUPS Ground only — USA only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReturns\u003c\/th\u003e\n\u003ctd\u003eAll sales final — not returnable (hazardous material)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e145.415\u003c\/td\u003e\n\u003ctd\u003e1\/4 gram (1 oz concentrate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePen rhodium solutions differ from bath solutions in pH and concentration; use with pen-plating equipment and appropriate tips.\u003c\/li\u003e\n\u003cli\u003eSurface preparation is critical — clean and activate or strike the substrate as required for proper adhesion and color uniformity.\u003c\/li\u003e\n\u003cli\u003eContains \u003cstrong\u003esulfuric acid\u003c\/strong\u003e; wear appropriate PPE and follow all professional plating safety practices.\u003c\/li\u003e\n\u003cli\u003eSuccessful plating requires correct equipment, chemistries, and process steps. Not all metals can be rhodium plated — verify process compatibility before use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround shipping via UPS only.\u003c\/strong\u003e No air service or USPS. USA shipments only — cannot ship internationally.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cohler","offers":[{"title":"1\/4 Gram","offer_id":47551700238550,"sku":"145.415","price":195.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/superblack-pen-black-rhodium-solutions-otto-frei.jpg?v=1719958865","url":"https:\/\/www.ottofrei.com\/products\/cohler-superblack-pen-black-rhodium-solution-145-415","provider":"Otto Frei","version":"1.0","type":"link"}