{"product_id":"platinum-pqr-200-rotary-piston-converter-twist-fill-ink-converter","title":"Platinum PQR-200 Rotary Piston Converter – Twist-Fill Ink Converter for Platinum Fountain Pens","description":"\u003ch2\u003ePlatinum PQR-200 Rotary Piston Converter – Twist-Fill Ink Converter for Platinum Fountain Pens\u003c\/h2\u003e\n\n\u003cp\u003eUnlock the full potential of your Platinum fountain pen. The \u003cstrong\u003ePlatinum PQR-200 Rotary Piston Converter\u003c\/strong\u003e is the official ink converter designed for Platinum fountain pens, allowing you to fill directly from any bottled ink rather than being limited to proprietary cartridges. The twist-fill piston mechanism is smooth, precise, and reliable — drawing a consistent volume of ink with each rotation and sealing cleanly to prevent leaks. One converter. Unlimited ink choices.\u003c\/p\u003e\n\n\u003cp\u003eIf you use a Platinum fountain pen with bottled ink, this is the component that makes it possible.\u003c\/p\u003e\n\n\u003ch3\u003e✒️ Product Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Platinum (Japan)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e PQR-200\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Rotary piston converter — twist-fill mechanism for direct bottle filling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Platinum fountain pens that accept standard Platinum cartridges\/converters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInk compatibility:\u003c\/strong\u003e Works with all bottled fountain pen inks — Platinum, Iroshizuku, Diamine, Pilot, Sailor, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e Standard converter ink capacity — sufficient for extended writing sessions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Precision-engineered plastic and metal piston components — durable under regular use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Japan — Platinum’s official OEM converter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e Fountain pen enthusiasts, ink collectors, writers who use bottled ink, Platinum pen owners upgrading from cartridges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🇯🇵 Why Choose a Converter Over Cartridges?\u003c\/h3\u003e\n\u003cp\u003eInk cartridges are convenient — but they limit you to a handful of pre-filled colours and generate plastic waste with every change. A piston converter like the PQR-200 opens your pen to the \u003cstrong\u003eentire world of bottled fountain pen ink\u003c\/strong\u003e: hundreds of colours, dozens of brands, shimmering inks, iron gall inks, water-resistant inks, and everything in between. Refilling takes under a minute. The cost per fill is a fraction of a cartridge. And the ritual of dipping the nib into a bottle of ink you chose yourself is, for many writers, one of the most satisfying parts of using a fountain pen.\u003c\/p\u003e\n\n\u003ch3\u003e🔄 How to Use the PQR-200 Converter\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eUnscrew and remove the existing cartridge from your Platinum pen.\u003c\/li\u003e\n  \u003cli\u003eInsert the PQR-200 converter firmly into the pen’s section until it seats securely.\u003c\/li\u003e\n  \u003cli\u003eTurn the piston knob \u003cstrong\u003ecounter-clockwise\u003c\/strong\u003e to expel all air from the converter.\u003c\/li\u003e\n  \u003cli\u003eSubmerge the nib fully into your chosen bottled ink.\u003c\/li\u003e\n  \u003cli\u003eTurn the piston knob \u003cstrong\u003eclockwise\u003c\/strong\u003e slowly to draw ink into the converter.\u003c\/li\u003e\n  \u003cli\u003eWipe the nib and section clean with a soft cloth before capping.\u003c\/li\u003e\n  \u003cli\u003eYour pen is ready to write.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003e📦 What’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Platinum PQR-200 Rotary Piston Converter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eQ: Which Platinum fountain pens is the PQR-200 compatible with?\u003c\/h3\u003e\n\u003cp\u003eA: The PQR-200 is compatible with \u003cstrong\u003ePlatinum fountain pens that use the standard Platinum cartridge\/converter fitting\u003c\/strong\u003e — including popular models such as the Platinum Century 3776, Preppy, Plaisir, Cool, Balance, and many others. If your Platinum pen accepts a standard Platinum cartridge, it will accept the PQR-200 converter. If in doubt, check your pen’s model specifications or contact us before purchasing.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Can I use non-Platinum inks with this converter?\u003c\/h3\u003e\n\u003cp\u003eA: Yes. The PQR-200 is compatible with \u003cstrong\u003eany standard bottled fountain pen ink\u003c\/strong\u003e from any brand — including Iroshizuku, Diamine, Pilot, Sailor, Waterman, Private Reserve, and others. We recommend flushing the converter with clean water before switching between ink brands or colours.\u003c\/p\u003e\n\n\u003ch3\u003eQ: How do I fill the converter?\u003c\/h3\u003e\n\u003cp\u003eA: Insert the converter into your pen, turn the piston knob counter-clockwise to expel air, submerge the nib fully into the ink bottle, then turn the knob clockwise slowly to draw ink into the chamber. Wipe the nib and grip section clean before capping. Full filling instructions are included in the product description above.\u003c\/p\u003e\n\n\u003ch3\u003eQ: How do I clean the PQR-200?\u003c\/h3\u003e\n\u003cp\u003eA: Flush the converter by filling it with clean, lukewarm water and expelling it several times until the water runs clear. Repeat as needed when changing ink colours or putting the pen into storage. Do not use hot water or cleaning agents, which may damage the seals.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is the piston seal replaceable if it dries out?\u003c\/h3\u003e\n\u003cp\u003eA: The PQR-200 is designed for long-term use with regular cleaning. If the piston becomes stiff or dry after extended storage, a small amount of silicone grease applied to the piston seal will restore smooth operation. Replacement units are inexpensive if a seal fails after extended use.\u003c\/p\u003e\n\n\u003ch3\u003eQ: How does a piston converter differ from a squeeze converter?\u003c\/h3\u003e\n\u003cp\u003eA: A piston converter (like the PQR-200) uses a threaded screw mechanism to draw ink in with a controlled, precise stroke — generally allowing a fuller fill and better control. A squeeze converter uses a rubber sac that you press and release. Piston converters are generally preferred by experienced fountain pen users for their reliability and fill volume.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is this an official Platinum product?\u003c\/h3\u003e\n\u003cp\u003eA: Yes. The Platinum PQR-200 is an \u003cstrong\u003eofficial OEM converter manufactured by Platinum Pen Co., Ltd. (Japan)\u003c\/strong\u003e — not a third-party or aftermarket product. It is the same converter included with many Platinum pen sets sold globally.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Can I use this converter in a non-Platinum pen?\u003c\/h3\u003e\n\u003cp\u003eA: The PQR-200 uses Platinum’s proprietary fitting dimensions and is designed specifically for Platinum pens. It may not fit pens from other brands (such as Pilot, Sailor, or Lamy), which use different converter standards. Always verify compatibility with your specific pen model before purchasing.\u003c\/p\u003e","brand":"Platinum","offers":[{"title":"Default Title","offer_id":56039170048305,"sku":"PQR-200","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/O1CN01kjejFy1XQ2CGwGMHI__2200533992917.jpg_896ca842-72d8-4f61-902a-97cf63469592.webp?v=1788108429","url":"https:\/\/www.ttpen.com\/products\/platinum-pqr-200-rotary-piston-converter-twist-fill-ink-converter","provider":"TTpen","version":"1.0","type":"link"}