Atago MASTER-S/Millα Refractometer

Introduction to the Atago MASTER-S/Millα refractometer

The Atago MASTER-S/Millα refractometer (code 2491) is a handheld optical instrument by Atago (Japan), specially designed to determine the salinity and specific gravity of seawater. Made of premium salt-resistant materials, the product supports the fast and accurate testing of solutions with high salt concentrations. The device is suitable for both laboratory analysis and direct on-site field measurements.

Outstanding features

• Dual-scale design: measures seawater salinity from 0 to 100‰ and specific gravity from 1.000 to 1.070.
• Equipped with an automatic temperature compensation (ATC) mechanism to maintain measurement accuracy despite sample temperature fluctuations.
• IP65 water resistance rating facilitates convenient cleaning of the prism and instrument body after use.
• Instrument body made of special corrosion-resistant material, preventing damage from salt and enhancing equipment durability.

Applications

• Water quality and salinity control in hatcheries and aquaculture ponds.
• Marine environmental surveys, oceanographic research, and coastal ecological studies.
• Checking salinity and specific gravity in public aquariums and marine ornamental tanks.
• Performing testing and analysis of saline water samples in analytical laboratories.

Frequently Asked Questions

What parameters does the Atago MASTER-S/Millα refractometer measure?
The instrument directly measures seawater salinity in the range of 0 to 100‰ and specific gravity in the range of 1.000 to 1.070.

What does the IP65 water resistance rating mean in practice?
The IP65 rating makes the instrument dust-tight and protected against water jets, allowing users to easily rinse off saltwater samples under running water without risking damage to internal components.