Difluid RS Extract | Professional Coffee TDS Refractometer
Difluid RS Extract | Professional Coffee TDS Refractometer
A new era of coffee TDS measurement!
Description:
Understand Every Extraction
The DiFluid RS Extract coffee refractometer brings measurement into your brewing routine. Check a sample with a single button press, record your pour and keep results linked to the coffee you are working with. It provides a practical starting point for comparing recipes and making more informed brewing adjustments.
Advanced Analytical Capabilities
Flexible Sample Measurement
Measure warm or cold coffee within the supported temperature range, without waiting for every sample to reach room temperature.
Choose Your Reference
Zero with distilled water for a consistent reference when sharing results, or use brewing water to measure the contribution from the coffee.
Follow the Pour
A Bluetooth-connected DiFluid scale lets you track water weight, flow rate and elapsed time while brewing.
Keep Results in Context
CoffeeOS connects each reading to its bean, roast and grind, helping you retain the details behind your measurements.
Technical Specifications
| Model | DFT-RS01 |
| TDS Range | 0–30% |
| TDS Resolution | 0.01% |
| TDS Repeatability | ±0.02% |
| TDS Accuracy | ±0.02% at 0–4.99%; ±0.04% at 5–20%; ±0.06% at 20.01–30% |
| Sample Temperature | 4–65 °C |
| Operating Temperature | 5–45 °C |
| Display | 3.5-inch colour touchscreen |
| Memory | 500 readings; oldest overwritten when full |
| Battery | 3000 mAh; 13 hours of continuous measurement |
| Charging | USB-C |
| Protection Rating | IP67 |
| Dimensions | 150 × 72 × 28 mm |
| Compatibility | CoffeeOS and DiFluid Microbalance scales |
| Espresso Preparation | 0.45 µm PES syringe filtration required; filter sold separately |
Included in the Box
RS Extract, magnetic lid, charging cable, coffee spoon, quick start guide, QR code card and product information card.
Frequently Asked Questions
Does extraction calculation require a phone?
No. Simply enter the coffee dose and beverage weight on the device’s touchscreen.
How should I prepare an espresso sample?
Pass the sample through a 0.45 µm PES syringe filter and measure within one minute.
