The Atago MASTER-M Brix Refractometer is a premium optical refractometer manufactured in Japan for measuring Brix values in fruit juices, beverages, food products, and agricultural samples. Its robust metal body and precision optics make it a trusted choice for growers, food producers, and quality control professionals.
Equipped with Automatic Temperature Compensation (ATC), the MASTER-M delivers reliable readings across varying ambient temperatures without requiring manual corrections. The handheld design requires no batteries, making it ideal for field inspections, production facilities, and laboratory environments.
Features
- Measures sugar concentration from 0 to 33% Brix
- Automatic Temperature Compensation (ATC)
- High-quality Japanese optical system
- Durable metal body construction
- No batteries or power source required
- Fast and reliable optical measurements
- Easy calibration using distilled water
- Suitable for fruit, juice, beverage and food testing
- Portable handheld design for field and laboratory use
- Manufactured by Atago Japan
Technical Specifications
| Model | MASTER-M |
| Brand | Atago |
| Measurement Type | Brix (Sugar Content) |
| Brix Range | 0 to 33% |
| Resolution | 0.2% Brix |
| Accuracy | ±0.2% Brix |
| Temperature Compensation | Automatic (ATC) |
| Measurement Method | Optical refractometer |
| Calibration | Distilled water |
| Body Material | Metal alloy |
| Power Supply | Not required |
| Dimensions | 32 × 34 × 168 mm |
| Weight | Approx. 130 g |
| Country of Origin | Japan |





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