DiFluid R2 Extract - TDS Refractometer for Coffee

DiFluid R2 Extract – The science behind the perfect cup

Have 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.

R2 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 believing your grind size is right and knowing it.

"Good coffee is about balance. R2 Extract gives you the eyes to see the balance that the tongue sometimes misses."

Why R2 Extract is indispensable for your brewing:

• Extreme Precision (±0.02% TDS): With an advanced 2D CMOS sensor and dual temperature sensors, you get measurements that are more stable and accurate than ever before.
• Lightning-Fast Feedback: 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.
• Smart CoffeeOS Integration: Connect your R2 Extract to the DiFluid app via Bluetooth. Here you can plot your results directly into a Brew Control Chart, save recipes, and view your extraction trends over time.
• Robust and Maintenance-Free: 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).
• Microcalibration: The device automatically performs microcalibrations for each test using reference material, ensuring your data is always reliable, even with temperature fluctuations.

Understand your coffee with math

Once you know your TDS, you can easily calculate your Extraction Yield (EY%) to see if you’re making the most of your beans. The formula is simple:

Extraction Yield %=Coffee dose (g)TDS %×Brew weight (g)

Aiming for the golden standard (18-22% extraction)? R2 Extract shows you the way.

Technical Specifications

How to master your brewing (Step-by-step)

1. Prepare the sample: Take a small amount of your finished coffee (about 0.3 ml). Let it cool slightly for the fastest result.
2. Measure: Drip the coffee onto the heated aluminum bowl and press the button. After 4 seconds, you have your TDS.
3. Analyze: 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.
4. Clean: Quickly rinse the bowl with water and dry it with the included microfiber cloth.

FAQ – Frequently Asked Questions

Do I need to use the app every time? 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.

What’s included in the box? You get everything you need: R2 Extract device, calibration reference material, USB-C cable, microfiber cloth, coffee scoop, and access to CoffeeOS.

Shop at BloomVik with complete confidence

• 30-day return policy: We know data-driven brewing is addictive – try it yourself!
• Warranty: 1 year factory warranty and 2 years statutory warranty.
• Danish Support: We are ready to help you understand your measurements.

Elevate your coffee from "good" to "scientifically perfect". Order your DiFluid R2 Extract today.