à¤Ã×èͧÇÑ´¤èÒ¤ÇÒÁËÇÒ¹ Brix Refractometer ÁÔàµÍÃì ÇÑ´¹éÓµÒÅ ¡ÅéͧÇÑ´¤ÇÒÁËÇÒ¹ % Brix Meter ᡧ ªÒ ¡Òá¿ ¹éÓËÇÒ¹ ¹éÓàª×èÍÁ ¹éÓ¼Öé§ ÍÒËÒà ¼ÅäÁé à¤Ã×èͧÇÑ´¤ÇÒÁËÇÒ¹ MASTER-20a Refractometer (Automatic Temperature Compensation & Water Resistant) ASTER-20α are low concentration model (measurement range Brix 0.0 to 20.0%) of the MASTER-α / MASTER-Pα. Good for measurements of low concentration fruit juices, cutting oil, etc. Automatic Temperature Compensation (ATC) model with water resistant feature (IP65). The MASTER-20α is made of metal, and the MASTER-20Pα is plastic. The specifications are exactly the same. For salty and acidic samples, choose the plastic body, MASTER-20Pα. Specifications Model: MASTER-20α Cat.No.: 2381 Scale: Brix Measurement Range: Brix : 0.0 to 20.0% (Automatic Temperature Compensation) Minimum Scale: Brix : 0.1% Measurement Accuracy: Brix : ±0.2% (10 to 30°C) Repeatability: ±0.1% International Protection Class: IP65 (except eye piece); Dust-tight and Protected against water jets. Dimensions & Weight: 3.2×3.4× 20.7cm, 165g Options SUPER EXTRACTOR : RE-29401 10% Sucrose (±0.03%) : RE-110010 20% Sucrose (±0.03%) : RE-110020 Daylight plate for small volume samplings : RE-2311-58M * Calibration Certificate : Contact an ATAGO representative for details. Parts Daylight plate : RE-2315-60M Atago Brix Refractometer MASTER-20a Refractometer ¡ÅéͧÊèͧ¤ÇÒÁËÇÒ¹ ¹éÓàª×èÍÁ ÁÔàµÍÃìÇÑ´¹éÓµÒÅ à¤Ã×èͧÇÑ´¤ÇÒÁËÇÒ¹