{"product_id":"difluid-r2-extract-kaffe-refraktometer-tds","title":"DiFluid R2 Extract - TDS Refractometer for Coffee","description":"\u003cdiv class=\"bv-editorial-highlights-r2\"\u003e\n  \n  \u003cdiv class=\"bv-row\"\u003e\n    \u003cdiv class=\"bv-label\"\u003eLaboratory Precision\u003c\/div\u003e\n    \u003cdiv class=\"bv-text\"\u003eMeasure your coffee’s TDS (Total Dissolved Solids) with unmatched accuracy of ±0.03% and precision of ±0.02%. No more guessing your grind size.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"bv-row\"\u003e\n    \u003cdiv class=\"bv-label\"\u003e4-Second Feedback\u003c\/div\u003e\n    \u003cdiv class=\"bv-text\"\u003eDrip 0.3 ml of coffee onto the heated aluminum plate, press the button, and read the result immediately on the high-resolution LED screen.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"bv-row\"\u003e\n    \u003cdiv class=\"bv-label\"\u003eCoffeeOS Data\u003c\/div\u003e\n    \u003cdiv class=\"bv-text\"\u003eConnect via Bluetooth to plot your results directly into a digital Brew Control Chart. Save your best recipes and analyze your extraction trends.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"bv-row\"\u003e\n    \u003cdiv class=\"bv-label\"\u003eIP67 Water Resistant\u003c\/div\u003e\n    \u003cdiv class=\"bv-text\"\u003eRobust and maintenance-free design. The hydrophobic-protected 2D CMOS sensor withstands everyday coffee spills and quick rinsing under the tap.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"bv-row\"\u003e\n    \u003cdiv class=\"bv-label\"\u003eMicrocalibration\u003c\/div\u003e\n    \u003cdiv class=\"bv-text\"\u003eThe device performs automatic calibrations for each test using built-in reference material. This ensures reliable data even with temperature fluctuations.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n  .bv-editorial-highlights-r2 {\n    margin: 35px 0;\n    border-top: 1px solid #e5e5e5;\n    border-bottom: 1px solid #e5e5e5;\n    padding: 10px 0;\n    background: transparent;\n  }\n\n  .bv-row {\n    display: grid;\n    grid-template-columns: 1fr 2fr; \/* 1\/3 til overskrift, 2\/3 til forklaring *\/\n    gap: 20px;\n    padding: 18px 0;\n    border-bottom: 1px solid #f2f2f2;\n  }\n\n  .bv-row:last-child {\n    border-bottom: none;\n  }\n\n  \/* Venstre kolonne (Egenskab) *\/\n  .bv-label {\n    font-size: 0.8rem;\n    text-transform: uppercase;\n    letter-spacing: 1.5px;\n    font-weight: 600;\n    color: #0A2E36; \/* BloomVik Signaturfarve *\/\n    line-height: 1.4;\n  }\n\n  \/* Højre kolonne (Tekst) *\/\n  .bv-text {\n    font-size: 0.95rem;\n    line-height: 1.5;\n    color: #2c2c2c;\n    font-weight: 400;\n  }\n\n  \/* Mobil-optimering *\/\n  @media (max-width: 749px) {\n    .bv-row {\n      grid-template-columns: 1fr;\n      gap: 6px;\n      padding: 14px 0;\n    }\n    \n    .bv-label {\n      font-size: 0.75rem;\n    }\n    \n    .bv-text {\n      font-size: 0.9rem;\n    }\n  }\n\u003c\/style\u003e\n\u003ch3\u003eDiFluid R2 Extract – The science behind the perfect cup\u003c\/h3\u003e\n\u003cp\u003eHave you ever brewed a cup of coffee that tasted magical, only to find you couldn’t recreate it the next day? DiFluid R2 Extract removes the guesswork. This high-precision refractometer measures your coffee’s TDS (Total Dissolved Solids) with lab-grade accuracy, so you can understand exactly what’s happening in your cup—and how to do it again.\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eR2 Extract is not just a measuring device; it is the heart of your \"Brew Control System.\" By measuring the concentration of dissolved coffee particles, you get the data you need to calculate your extraction yield. It’s the difference between \u003ci\u003ebelieving\u003c\/i\u003e your grind size is right and \u003ci\u003eknowing\u003c\/i\u003e it.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\"Good coffee is about balance. R2 Extract gives you the eyes to see the balance that the tongue sometimes misses.\"\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy R2 Extract is indispensable for your brewing:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eExtreme Precision (±0.02% TDS):\u003c\/b\u003e With an advanced 2D CMOS sensor and dual temperature sensors, you get measurements that are more stable and accurate than ever before.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLightning-Fast Feedback:\u003c\/b\u003e Get your result in just 4 seconds. The high-resolution screen shows you the TDS% immediately, so you can adjust your next brew right away.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSmart CoffeeOS Integration:\u003c\/b\u003e Connect your R2 Extract to the DiFluid app via Bluetooth. Here you can plot your results directly into a \u003ci\u003eBrew Control Chart\u003c\/i\u003e, save recipes, and view your extraction trends over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRobust and Maintenance-Free:\u003c\/b\u003e With an IP67 rating, the device is water-resistant. Simply rinse the aluminum bowl under the tap after use (but avoid submerging the entire device to keep the charging port dry).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMicrocalibration:\u003c\/b\u003e The device automatically performs microcalibrations for each test using reference material, ensuring your data is always reliable, even with temperature fluctuations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eUnderstand your coffee with math\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eOnce you know your TDS, you can easily calculate your \u003cb\u003eExtraction Yield (EY%)\u003c\/b\u003e to see if you’re making the most of your beans. The formula is simple:\u003c\/p\u003e\n\u003cp\u003eExtraction Yield %=Coffee dose (g)TDS %×Brew weight (g)\u003c\/p\u003e\n\u003cp\u003eAiming for the golden standard (18-22% extraction)? R2 Extract shows you the way.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/yQAeou1IsBk?si=P3yn6dPR2L5sfDmR\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/b\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eSpecification\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eDetails\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eMeasurement range\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e0 - 30% TDS\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003ePrecision\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e±0.03% TDS (Accuracy: ±0.02%)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eResolution\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e0.01% TDS\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eTest time\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e4 seconds\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eSensor\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e2D CMOS with hydrophobic protection\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eBattery\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e430 mAh (USB-C charging)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eWater resistance\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003eIP67 (Dustproof and protected against short-term immersion)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eOperating temperature\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e5°C - 40°C\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHow to master your brewing (Step-by-step)\u003c\/b\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cb\u003ePrepare the sample:\u003c\/b\u003e Take a small amount of your finished coffee (about 0.3 ml). Let it cool slightly for the fastest result.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMeasure:\u003c\/b\u003e Drip the coffee onto the heated aluminum bowl and press the button. After 4 seconds, you have your TDS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAnalyze:\u003c\/b\u003e See the result in the CoffeeOS app. Is your extraction too low (under-extracted\/sour)? Grind finer. Is it too high (over-extracted\/bitter)? Grind coarser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean:\u003c\/b\u003e Quickly rinse the bowl with water and dry it with the included microfiber cloth.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cb\u003eFAQ – Frequently Asked Questions\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDo I need to use the app every time?\u003c\/b\u003e No, the R2 Extract works perfectly as a standalone device. The screen gives you all the necessary data right away. However, the app is great for saving your data and viewing graphs of your progress.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhat’s included in the box?\u003c\/b\u003e You get everything you need: R2 Extract device, calibration reference material, USB-C cable, microfiber cloth, coffee scoop, and access to CoffeeOS.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShop at BloomVik with complete confidence\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e30-day return policy:\u003c\/b\u003e We know data-driven brewing is addictive – try it yourself!\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty:\u003c\/b\u003e 1 year factory warranty and 2 years statutory warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDanish Support:\u003c\/b\u003e We are ready to help you understand your measurements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eElevate your coffee from \"good\" to \"scientifically perfect\". Order your DiFluid R2 Extract today.\u003c\/b\u003e\u003c\/p\u003e","brand":"DiFluid","offers":[{"title":"Default Title","offer_id":55849647276380,"sku":"DIFLUID-R2-EXT-001","price":248.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/3706\/8380\/files\/DiFluid_R2_11.png?v=1770724376","url":"https:\/\/homeroast.fr\/en\/products\/difluid-r2-extract-kaffe-refraktometer-tds","provider":"BloomVik","version":"1.0","type":"link"}