{"product_id":"research-peptide-pen-v4-rose-gold","title":"Research Pen V4 Rose Gold","description":"\u003cp\u003eUpgrade your research setup with the \u003cstrong\u003eRose Gold \u003c\/strong\u003e\u003cstrong\u003eReusable Pen V4\u003c\/strong\u003e—a refined evolution of the original V1 platform, now enhanced with a concealed-needle cap system and optimized cartridge utilization. Designed for researchers who prefer the extended V1 form factor but want improved efficiency and discretion, the V4 delivers precision, control, and less compound waste per cartridge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eV1 Form Factor, Upgraded Design\u003c\/strong\u003e\u003cbr\u003eThe V4 maintains the longer, balanced profile researchers appreciated in the V1, offering a stable grip and confident handling during administration. The overall body is slightly shorter than the original V1 for a more compact feel without sacrificing control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeedle-Hidden Cap System\u003c\/strong\u003e\u003cbr\u003eIncorporating the concealed cap design introduced in the V2, the V4 keeps the needle discreet during use and storage—ideal for cleaner bench setups and reduced visual exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized 60 IU Delivery System\u003c\/strong\u003e\u003cbr\u003eUnlike the V1’s 80 IU capacity, the V4 is calibrated for up to ~60 IU. This shorter stroke length allows the internal plunger to travel further within the cartridge, reducing residual compound left behind and maximizing usable volume per fill.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Dosing Control\u003c\/strong\u003e\u003cbr\u003eA consistent dial and smooth delivery mechanism provide repeatable, accurate micro-dosing across research applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1335\" data-end=\"1376\"\u003eStandard 3 mL Cartridge Compatibility\u003c\/strong\u003e\u003cbr data-start=\"1376\" data-end=\"1379\"\u003eCompatible with universal 3ml cartridges. Integrating seamlessly into existing lab workflows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Metal Construction\u003c\/strong\u003e\u003cbr\u003eFinished in clean Rose Gold metal, the V4 balances lightweight portability with long-term durability and a professional lab aesthetic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003cbr\u003e(1) V4 reusable Rose Gold pen\u003c\/p\u003e\n\u003cp\u003eV4 hidden needle feature only works with thinner based needles.\u003c\/p\u003e\n\u003cp\u003eCheck our other listings for additional cartridges and accessories.\u003c\/p\u003e\n\u003cp\u003e⚠️ For Research Use Only – Not for human or veterinary use.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Rose gold","offer_id":45353132196022,"sku":"PC-PEN-V4-RSGLD","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/3119\/5830\/files\/Gemini_Generated_Image_iehd2riehd2riehd.png?v=1786593981","url":"https:\/\/peptidecritic.myshopify.com\/products\/research-peptide-pen-v4-rose-gold","provider":"Peptide Critic Store","version":"1.0","type":"link"}