DiFluid R2 Extract Coffee TDS Refractometer

Pre-order DiFluid R2 Extract, a coffee TDS refractometer for brewers who want extraction data beside their tasting notes.R2 measures total dissolved solids, connects to CoffeeOS over Bluetooth, and helps plot brew results on the Brew Control Chart. Use it to compare filter coffee, espresso and batch-brew recipes with repeatable data.Key details 0-30% TDS range: covers filter coffee and espresso concentration checks. CoffeeOS sync: connects readings with brew ratio and extraction workflows. Calibration options: distilled water for comparability or brew water for day-to-day checks. CMOS sensor: designed to reduce external-light impact and work without a lid. Pre-order dispatch: ships by 15/08/2026 after incoming shipment receipt and QC.