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May 17, 2022
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Product Detail

Item#: MIL1021

Digital Seawater Refractometer Digital Seawater Refractometer
  Type Use:
  Units/Case: 1
  Wt Each: 5.00
Spec Sheet

Other Important Information About This Product
  Related Product:
Apex Controller System

  Substitute Product:
Aqualife Pro Refractometer

  Use This Product With:
Refractometer Calibration Standard 0 ppt 2 oz

Product Name: Digital Seawater Refractometer
Category: Testing & Controllers*
Subcategory: Hydrometers & Refractometers
Manufacturer: Milwaukee
Thousands of saltwater aquarium enthusiasts have dialed in the analysis with Milwaukee's salinity refractometer. No more visual readings. Get a digital readout within seconds accurate to ±2 ppt with automatic temperature compensation (ATC).


"This is a terrific addition and you'll want a digital refractometer if you spend any time at all with saltwater aquariums. Highly recommended."

"This is a must for any even remotely serious reef tank hobbyist."

"All I can say is WOW! I should have had this sooner."


Fast, accurate results with digital dual level LCD readout
Easy measurement with just 2-3 drops of sample needed and results less than 2 seconds
Automatically temperature compensated
Simple one-point calibration using distilled or deionized water
Easy to clean, stainless steel sample well with unit rated to IP65 as "dust tight" and protected against water jets
Battery percent level indicator with automatic shut-off (batteries included)

Range: 0 to 50 PSU: 0 to 150 ppt | 1.000 to 1.114 S.G. (20/20) | 0 to 80°C / 32 to 175°F
Resolution: 1 PSU | 1 ppt | 0.001 S.G. (20/20) | 0.1°C / 0.1°F
Accuracy: ±2 PSU | ±2 ppt | ±0.002 S.G. (20/20) | ±0.3°C / ±0.5°F
Light Source: Yellow LED
Measurements Time: Approximately 1.5 seconds
Minimum Sample Volume 100 µL (cover prism totally)
Sample Cell Stainless steel ring and flint glass prism
Temperature Compensation: Automatic between 10 and 40°C / 50 to 104°F
Case Material: ABS
Battery: Type 1 x 9V AA (included)
Battery Life: 5000 readings
Auto-shut off: After 3 minutes of non-use
Enclosure Rating: IP65
Dimensions Meter: 7.6 x 4 x 2.64 inches (192 x 102 x 67 mm)
Weight Meter: .93 lbs. (0.42 kg)
Dimensions Package: 11 x 6.8 x 4.6 inches (268 x 172 x 118 mm)
Weight Packaged: 1.46 lbs. (0.66 kg)

Thank you for considering Milwaukee to help you take your results to the next level.

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