Salinity Refractometer MASTER-S/MillM

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. For the model with Automatic Temperature Compensation please choose MASTER-S/Millα.

  • Accuracy: ±1 (ppt); ±0.001 (s.g.)
  • Resolution: 1 (ppt); 0.001 (s.g.)
  • Min Salinity Range (Percent): 0
  • Max Salinity Range (Percent): 100
  • Description: Atago MASTER-S/MILLM. Salt/specific gravity refractometer
  • Salinity Refractometer MASTER-S/MillM
  • Salinity Refractometer MASTER-S/Millα






Salinity : 0 to 100‰

Specific gravity : 1.000 to 1.070

Minimum Scale

Salinity : 1‰

Specific gravity : 0.001


Measure salt concentration of brine in salted foods, or salt concentration in aquariums or commercial fisheries. Salt/Specific Gravity Refractometer measures salt in parts per thousand and specific gravity (1.000 to 1.070) of seawater. Made of polybutylene terephthalate (PBT) thermoplastic. Units provide high precision and accurate results.

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