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Refractometer (Automatic Temperature Compensation & Water Resistant) MASTER-4α / MASTER-4Pα

MASTER-4α / MASTER-4Pα has a measuring range between the MASTER-2α / 2Pα and the MASTER-3α / 3Pα (measurement range Brix 45.0 to 82.0%). MASTER-4α / MASTER-4Pα can be used for high concentration samples, such as condensed milk, concentrated fruit juice, jam, marmalade, liquid sugar, etc. These are an Automatic Temperature Compensation (ATC) model with water resistant feature (IP65).
The MASTER-4α is made of metal, and the MASTER-4Pα is plastic. The specifications are exactly the same. For salty and acidic samples, choose the plastic body, MASTER-4Pα.

*Calibration with the 50% Sucrose Solution ( RE-110050 ) , 60% Sucrose Solution ( RE-110060 ) or Standard liquid LB ( RE-2100-83N )

Scale range
Brix 45.0 to 82.0% (Automatic Temperature Compensation)
Minimum Scale
Brix 0.2%
Measurement Accuracy
Brix ±0.2% (10 to 40°C)
International Protection Class 
IP65 (except eye piece)
Dust-tight and Protected against water jets.
Size & Weight
3.2×3.4× 16.8cm, 130g
3.2×3.4×16.8cm, 90g
• 50% Sucrose Solution (±0.05%) : RE-110050
• 60% Sucrose Solution (±0.05%) : RE-110060
• Standard liquid LB : RE-2100-83N
* Calibration Certificate : Contact an ATAGO representative for details.
• Daylight plate for small volume samplings for MASTER series : RE-2311-58M (Except viscosity sample)
• Daylight plate for small volume samplings for MASTER series : RE-2391-50M (Except viscosity sample)
Daylight plate for MASTER series : RE-2311-57M Daylight plate for MASTER series : RE-2391-59M

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