Atago 2481 MASTER-S28α Salinity Hand-Held Refractometers MASTER series , (Automatic Temperature Compensation & Water Resistant), Sodium chloride : 0.0 to 28.0g/100g
Specifications
Model | MASTER-S28α |
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Cat.No. | 2481 |
Scale | Sodium chloride |
Measurement Range | Sodium chloride : 0.0 to 28.0g/100g (Automatic Temperature Compensation) |
Minimum Scale | Sodium chloride : 0.2g/100g |
Measurement Accuracy | ±0.2% (10 to 30゚C) |
International Protection Class | IP65 (except eye piece) Dust-tight and Protected against water jets. |
Dimensions & Weight | 3.2 x 3.4 x 16.8cm, 90g |
Options
· Daylight plate for small volume samplings : RE-2391-50M
* Calibration Certificate : Contact an ATAGO representative for details.
Parts
· Daylight plate : RE-2315-61M
Design Registration No.000379326-0001, 000379326-0002 (EU)
ZL 2005 3 0116403.4,5 (China), D111526 (Taiwan), D555, 549 (U.S.A.),
1255763, 1255764, 1255765, 1255766, 1255767 (Japan)
Patent Granted in countries around the world.


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 is an Automatic Temperature Compensation (ATC) model with water resistant properties (IP65)
Hand-Held Refractometers MASTER series
This new type of Hand-held Refractometer MASTER functions such as Easy-to-Read, Easy-to-Hold, Smooth sampling, Easy disposal of sample from the edge, the improvement of hygiene aspect by employing the new type of grip, and well balanced structure, emphasis is also placed on its design, well exemplified by the streamlined body and the strong grip with rich texture.
Features


- 2006 “ Good Design Award “
- 2007 “ The Invention Prize “
- 2007 “ Japan Patent Office Commissioner Encouragement Prize “
- 2009 “ Minister of Education Award “
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Protection class of the MASTER-α, H series are IP65. You can rinse off the sample by running water on the prism. The design allows the user to easily wipe off the sample. | ![]() |
Sample size 2-3drops. |
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The Automatic Temperature Compensation function of the MASTER-α, T, H series enables you to take measurement readings regardless of the ambient temperature. | ![]() |
Automatic Sample Distribution (ASD) New prism housing design allows for sample to cover the prism without having to lift the day-light plate! This design will allow forfast & easy measurements. |
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Convenient Storage case. |
The MASTER series has been improved with a clearer, brighter field of view and made even easier to carry.

The MASTER series has been improved with a clearer, brighter field of view and made even easier to carry.
These improvements in our newly compact redesigned models are especially clear when taking measurements in dim lighting, or measuring darkly-colored samples. Even when measuring milky-colored, opaque, or oily samples, the boundary line remains crisp and clear.
Note: The size of the scale has changed. It may take some time to re-adjust to the new field of view when reading measurements.
EXPLANATION OF ICONS
Icons, for functions, specifications and scales have been added to this catalog
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