Precision Alcohol Testing
DR403 digital refractometer delivers instant, accurate readings (0-73% range) with refractive index precision (1.3330-1.4200), ensuring reliable alcohol content analysis for breweries, distilleries, and labs.
Advanced Auto-Replenishment
Patented auto-fill system eliminates manual sample handling, reducing contamination risks and speeding up batch testing for beer, wine, and spirits production.
Durable Industrial Design
CNC-machined stainless steel optical housing and scratch-resistant sapphire lens ensure long-term durability in harsh environments like breweries or quality control labs.
One-Touch Calibration
Pre-calibrated with distilled water; features single-button recalibration for effortless maintenance between batches without professional tools.
Portable & Fast Results
Compact handheld design with <3-second measurement time, ideal for field use in mobile bars, craft breweries, or import/export compliance checks.
Clear Digital Display
High-contrast LCD shows real-time temperature-compensated results, eliminating guesswork for non-technical users in hospitality or small-batch production.