Overview
R2 Extract – Coffee TDS Refractometer
The R2 Extract Coffee TDS Refractometer is a precision tool designed for baristas, roasters, and coffee professionals who want to measure extraction and brew strength with accuracy. By analyzing the Total Dissolved Solids (TDS) in your coffee, this device helps you understand extraction levels and fine-tune your brewing process for consistent, high-quality results.
Whether you're dialing in espresso, optimizing pour-over recipes, or maintaining quality control in a café or roastery, the R2 Extract provides fast and reliable measurements to support data-driven brewing.
Key Features
Accurate TDS Measurement
Quickly measures the Total Dissolved Solids (TDS) in coffee, helping you evaluate brew strength and extraction yield.
Improved Brewing Consistency
Allows baristas to precisely dial in recipes and maintain consistent flavor profiles across different brews.
Fast and Easy to Use
Simply place a small coffee sample on the sensor and receive readings within seconds.
Compact & Portable
Lightweight and easy to carry, making it ideal for cafés, roasteries, training labs, and coffee competitions.
Quality Control Tool
Perfect for professional environments where maintaining brew consistency and extraction accuracy is essential.
Ideal For
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Specialty coffee cafés
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Coffee roasters
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Barista training and education
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Brewing experimentation and recipe development
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Coffee competitions and quality control
Why Use a Coffee Refractometer?
Using a refractometer helps measure coffee strength (TDS) and calculate extraction yield, allowing baristas to brew within the optimal extraction range for balanced flavor, sweetness, and clarity.
Specifications
| TDS Measurement Range | 0 – 30% TDS |
|---|---|
| Accuracy | ±0.03% TDS |
| Precision | ±0.02% TDS |
| Resolution | 0.01% TDS |
| Refractive Index Range | 1.33299 – 1.38660 |
| Refractive Index Precision | ±0.00004 |
| Refractive Index Resolution | 0.00002 |
| Test Time | ~4 seconds |
| Operating Temperature | 5°C – 40°C |
| Battery Capacity | 430 mAh rechargeable lithium battery |
| Charging Port | USB-C |
| Charging Specification | 5V ⎓ 0.3A |
| Water Resistance | IP67 (rinseable for easy cleaning) |
| Dimensions | 88 × 36 × 16 mm |
| Weight | ~36 g |
More details
- Physical Specifications
- In the Box
- R2 Extract Coffee Refractometer
- Coffee sample spoon
- Protective travel case / pouch
- USB-C charging cable
- User manual
Delivery & warranty
Dispatch & delivery
In-stock items are dispatched within 1–2 working days. Delivery cost and time for your country are shown in the cart and at checkout.
Shipping detailsReturns
15 days to return unused items, 30 days for orders delivered 1 Dec–31 Jan. You pay return shipping, unless the item arrived faulty or wrong.
Returns & warrantyWarranty
2-year warranty with service in Europe. For a warranty issue, we cover the return shipping.
Questions? Chat with our coffee team.
Ask us on chat. Our assistant answers 24/7, and a person from our team takes over 9:00–15:00 CET.
