Product Line-Up

Reason to choose MASTER series

Water resistant（α & H series）

"Washable". A special design concept for analog type measuring instruments. It is a new mechanism that can be washed even under running water after measurement.

Visibility

The readability of measured values is the "lifeline" for hand-held refractometer.Not only the brightness of the entire field of view, but also the clarity of the boundaries represents the basis of the optical technology that ATAGO has reached.

Contamination free

Uses a smooth grip with no irregularities. The carbon-like design contributes to both cleanliness and playfulness.

ATC Temperature compensation（α・H・T series）

The measured value are automatically corrected according to the environment. We have thoroughly improved the structure and arrived at a mechanism, patented that is not found anywhere else.

Function and Design

Measurement Method

MASTER-RI is refractive-index model.It can be used for measuring the refractive index of vegetable oil, petroleum, oil slicks, etc	Model MASTER-RI Cat.No. 2612 Range Refractive index : 1.435 to 1.520 Minimum Scale Refractive index : 0.001
Optimized for measuring Brix concentration of plant juices from leaves,stems and roots with an only a small amount of liquid.	Model MASTER-AGRI Cat.No. 2462 Range Brix : 0.0 to 53.0% Minimum Scale 0.2%
This instrument measures the salinity and specific gravity of seawater, and utilizes a new material that is durable against salty samples, The salinity of seawater is displayed in parts per mill (‰). It is an Automatic Temperature Compensation (ATC) model with water resistant properties (IP65).	Model MASTER-S/Millα Cat.No. 2491 Range Salinity : 0 to 100‰ Specific gravity : 1.000 to 1.070 (Automatic Temperature Compensation) Minimum Scale Salinity : 1‰ Specific gravity : 0.001 Accuracy Salinity : ±2‰ Specific gravity : ±0.001
This instrument measures the salinity and specific gravity of seawater, and utilizes a new material that is durable against salty samples, The salinity of seawater is displayed in parts per mill (‰). The MASTER-S/MillM is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually	Model MASTER-S/MillM Cat.No. 2493 Range Salinity : 0 to 100‰ Specific gravity : 1.000 to 1.070 Minimum Scale Salinity : 1‰ Specific gravity : 0.001
It has dual scales of Brix and Salinity, all-in-one unit for measuring concentrations of beverages, fruit juices, and soups as well as salt in water.	Model MASTER-BX/S28M Cat.No. 2484 Range Brix : 0.0 to 33.0% Sodium chloride : 0.0 to 28.0g/100g Minimum Scale Brix : 0.5% Sodium chloride : 0.5g/100g Accuracy ±0.2%
This instrument is designed to meaure salt water concentration such as in cooking or rinsing seafood It utilizes a new material that is durable against salty and acidic samples. It has an Automatic Temperature Compensation (ATC) model with water resistant properties (IP65).	Model MASTER-S10α Cat.No. 2471 Range Sodium chloride : 0.0 to 10.0g/100g Minimum Scale 0.1g/100g Accuracy ±0.2%
This instrument is designed to measure salt water concentration such as in cooking or rinsing seafood It utilizes a new material that is durable against salty and acidic samples. The MASTER-S10M is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually	Specifications Model MASTER-S10M Cat.No. 2473 Range Sodium chloride : 0.0 to 10.0g/100g Minimum Scale Sodium chloride : 0.1g/100g
The units can be used for controlling the concentration of saltwater used in rinsing seafood or salinity in cooking. NEW material which is durable for salty and acid sample is adopted. It has an Automatic Temperature Compensation (ATC) model with water resistant properties (IP65).	Specifications Model MASTER-S28α Cat.No. 2481 Range Sodium chloride : 0.0 to 28.0g/100g Minimum Scale 0.2g/100g Accuracy ±0.2%
The units can be used for controlling the concentration of saltwater used in rinsing seafood or salinity in cooking. NEW material which is durable for salty and acid sample is adopted. The Master-S28M is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually	Specifications Model MASTER-S28M Cat.No. 2483 Range Sodium chloride : 0.0 to 28.0g/100g Minimum Scale Sodium chloride : 0.2g/100g
This dual-scale hand-held refractometer measures both the water content and Brix of honey. This model has an automatic temperature compensation and water resistant function.	Specifications Model MASTER-HONEY/BX Cat.No. 2514 Range Honey moisture : 12.0 to 30.0% Brix : 58.0 to 90.0% Minimum Scale Honey moisture : 0.2% Brix : 0.2% Accuracy Honey moisture : ±0.2% Brix : ±0.2%
This can be used for measuring the concentration and freezing temperature of ethylene glycol and propylene glycol.	Specifications Model MASTER-BR Cat.No. 2930 Range E.G : 0 to 70%, 0 to -50ﾟC P.G : 0 to 70%, 0 to -50ﾟC Minimum Scale E.G : 5%, 5ﾟC P.G : 5%, 5ﾟC
This refractometer has an exclusive scale for measuring specific gravity of battery fluid and forchecking the freezing temperature of ethylene glycol and propylene glycol which are used as antifreeze mixture in automobiles, thermal catalyst for solar power systems and other industrial applications.	Specifications Model MASTER-BC Cat.No. 2931 Range ＜Freezing temperature scale＞ E.G. : 0 to -50°C P.G. : 0 to -50°C ＜Battery fluid d20/20＞ 1.150 to 1.300 Minimum Scale ＜Freezing temperature scale＞ E.G. : 5°C P.G. : 5°C ＜Battery fluid d20/20＞ 0.01
The MASTER-URC/Nα is designed to quickly and easily measure Urine Specific Gravity with just a single drop of sample. The new plastic body design is resistant against corrosion from salty and acidic samples, and incorporates an improved optics system for higher contrast and better clarity. Simple to use, lightweight, and portable! It is featuring a water resistant design and Automatic Temperature Compensation.	Specifications Model MASTER-URC/Nα Cat.No. 2791 Range Urine S.G. scale : 1.000 to 1.050 Refractive index scale (nD) : 1.333 to 1.356 Minimum Scale Urine S.G. scale : 0.001 Refractive index scale (nD) : 0.001 Accuracy Urine S.G. scale : ± 0.001 Refractive index scale (nD) : ± 0.0005
The MASTER-URC/NM is designed to quickly and easily measure Urine Specific Gravity with just a single drop of sample. The new plastic body design is resistant against corrosion from salty and acidic samples, and incorporates an improved optics system for higher contrast and better clarity. Simple to use, lightweight, and portable! The MASTER-URC/NM is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually.	Specifications Model MASTER-URC/NM Cat.No. 2793 Range Urine S.G. scale : 1.000 to 1.050 Refractive index scale(nD) : 1.333 to 1.356 Minimum Scale Urine S.G. scale : 0.001 Refractive index scale(nD) : 0.001
The MASTER-SUR/Nα is designed for clinical purposes: "Serum Protein", "Specific Gravity of Urine" and "Refractive Index". The plastic body model is designed to be resistant salty and acidic samples. It is an Automatic Temperature Compensation (ATC) model with water resistant properties (IP65).	Specifications Model MASTER-SUR/Nα Cat.No. 2771 Range Urine S.G. scale : 1.000 to 1.060 Serum protein scale : 0.0 to 12.0g / 100mL Refractive index scale (nD) : 1.3330 to 1.3660 (Automatic Temperature Compensation) Minimum Scale Urine S.G. scale : 0.001 Serum protein scale : 0.2g / 100mL Refractive index scale (nD) : 0.0005 Accuracy Urine S.G. scale : ±0.001 Serum protein scale : ±0.2g / 100mL Refractive index scale (nD) : ±0.0005
The MASTER-SUR/NM is designed for clinical purposes: "Serum Protein", "Specific Gravity of Urine" and "Refractive Index". The plastic body model is designed to be resistant salty and acidic samples. The MASTER-SUR/NM is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually. Not equipped with the Automatic Temperature Compensation feature.	Specifications Model MASTER-SUR/NM Cat.No. 2773 Range Urine S.G. scale : 1.000 to 1.060 Serum protein scale : 0.0 to 12.0g / 100mL Refractive index scale (nD) : 1.3330 to 1.3660 Minimum Scale Urine S.G. scale : 0.001 Serum protein scale : 0.2g / 100mL Refractive index scale (nD) : 0.0005
Urine specific gravity and blood serum protein of dogs and cats can be quickly measured with a single drop of sample.Equipped with automatic temperature compensation (ATC) feature, and water resistance (IP65) feature that allows for the unit to be rinsed under running water for easy clean-up after measurement.	Model MASTER-VET Cat.No. 2757 Range Urine.S.G.(Dog) : 1.000～1.060 Urine.S.G.(Cat) : 1.000～1.080 Serum protein scale : 0.0～14.0g/100mL Minimum Scale Urine.S.G. : 0.002 Serum protein scale : 0.2 Accuracy Urine.S.G. : ±0.002 Serum protein scale : ±0.2
This model is wine refractometer which has the scale of TA, used for measuring grape must concentrations. It comes with Automatic Temperature Compensation function (ATC) and Water Resistant feature (IP65).	Specifications Model MASTER-TA Cat.No. 2590 Range T.A. : 0.0 to 25.0 % Brix : 0.0 to 40.0 % Minimum Scale T.A. : 0.2 % Brix : 0.5 % Accuracy T.A. : ±0.3 % Brix : ± 0.5 %
This model is wine refractometer which has the scale of OE, used for measuring grape must concentrations. It comes with Automatic Temperature Compensation function (ATC) and Water Resistant feature (IP65).	Specifications Model MASTER-OE Cat.No. 2591 Range Oe : 0.0 to 130° Brix : 0.0 to 33.0 % Minimum Scale Oe : 2° Brix : 0.5 % Accuracy Oe : ±2° Brix : ±0.2 %
This model is wine refractometer which has the scale of GOE, used for measuring grape must concentrations. It comes with Automatic Temperature Compensation function (ATC) and Water Resistant feature (IP65).	Specifications Model MASTER-GOE Cat.No. 2592 Range German Oechsle : 30 to 170° Brix : 0.0 to 40.0 % Minimum Scale German Oechsle : 1° Brix : 0.5 % Accuracy German Oechsle : ±2° Brix : ±0.5 %
This model is wine refractometer which has the scale of KMW, used for measuring grape must concentrations. It comes with Automatic Temperature Compensation function (ATC) and Water Resistant feature (IP65).	Specifications Model MASTER-KMW Cat.No. 2593 Range KMW : 0.0 to 27.0° Brix : 0.0 to 33.0 % Minimum Scale KMW : 0.5° Brix : 0.5 % Accuracy KMW : ±0.5° Brix : ±0.5 %
This model is wine refractometer which has the scale of BAUME, used for measuring grape must concentrations. It comes with Automatic Temperature Compensation function (ATC) and Water Resistant feature (IP65).	Specifications Model MASTER-BAUME Cat.No. 2594 Range Baume : 0.0 to 21.0° Brix : 0.0 to 40.0% Minimum Scale Baume : 0.2° Brix : 0.5 % Accuracy Baume : ±0.3° Brix : ± 0.5 %