DiFluid R2 Extract Refractometer

The DiFluid R2 Extract Refractometer delivers lab-grade accuracy in measuring Total Dissolved Solids (TDS) for coffee brewing—ideal for specialty cafés and serious home baristas. With ±0.03% accuracy and a 0-30% TDS range, it enables precise extraction control and consistent flavour outcomes.

SKU: DIFR2RCategories: AccessoriesBrand: DiFluid

Measuring range

0–30% TDS

Precision

±0.02% TDS

Accuracy

±0.03% TDS

Dimensions

88 × 36 × 16 mm

Battery

430 mAh rechargeable (USB-C)

Unlock full control over your coffee extraction with the DiFluid R2 Extract Refractometer, a high-precision tool designed for professionals and advanced home brewers alike. Utilising a 2D CMOS sensor and dual temperature sensors, this device ensures that your TDS readings are both accurate and stable—even under fluctuating environmental conditions.

Exceptional extraction begins with data. The R2 captures the concentration of dissolved solids—representing the actual coffee material in the brew—allowing you to track and refine your brewing process for optimal yield and flavour. A benchmark filter brew might show ~1.3-1.5% TDS and a well-dialled espresso 7-9%, so by having consistent insight you can replicate your best brews reliably.

What sets the DiFluid R2 apart is its mix of professional features packaged in a compact, intuitive device. It includes a scratch-resistant hydrophobic sample dish, a cap-free design for faster workflow, IP67 water resistance for easy cleaning, and full app connectivity for logging your readings and tracking your extraction history.

For café operators, this refractometer offers a significant upgrade in workflow: quality control becomes data-driven, not guess-based. Baristas can monitor extraction yield in real time, compare shots and pours, and adjust live to maintain consistency across shifts. For home enthusiasts, the R2 brings lab-level insight into your kitchen or brew bar—so you can explore grind-brew-time relationships, compare beans and roasts, and raise the standard of your daily brew.

Whether you’re dialling in single-origin filter coffee or analysing espresso shots for competition-level consistency, the DiFluid R2 delivers precision, speed and insight. It bridges the gap between blind faith and actionable metrics, making extraction visible, measurable and repeatable.

Specifications

  • Measuring range: 0–30% TDS.
  • Precision: ±0.02% TDS.
  • Accuracy: ±0.03% TDS.
  • Resolution: 0.01% TDS.
  • Dimensions: 88 × 36 × 16 mm.
  • Weight: approx. 36 g.
  • Operating temperature: 5 ºC – 40 ºC.
  • Battery: 430 mAh rechargeable (USB-C).
  • Water resistance: IP67.

Features

  • Lab-Grade Precision & Accuracy: With ±0.03% accuracy and ±0.02% precision, you’re measuring coffee extraction with confidence—essential for quality-focused brewers.
  • Real-Time Extraction Insight: By measuring TDS directly, the R2 enables you to understand and replicate optimum extraction yield—no more guesswork.
  • Pro Workflow Integration: Features like cap-free sample dish, hydrophobic coating, water-resistance and app connectivity streamline your café or home bar workflow.
  • Compact & Lightweight Design: At just 36 g and 88 × 36 × 16 mm, this instrument fits easily into barista toolkits or tight bench spaces without compromise.
  • Versatile Application: Suitable for filter brewing, espresso, cupping labs or quality-control desks—making it a valuable investment for café professionals and enthusiasts alike.