Milwaukee MA887 Digital Refractometer

New product

Measures saltwater in PSU, PPT and S.G. scales

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$ 238.00

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The new Milwaukee MA887 Seawater Digital Refractometer is an advanced water diagnostic instrument that supports 3 different scales for the measurement of seawater:

  • PSU (Practical Salinity Units)
  • PPT (Parts Per Thousand)
  • S.G. (Specific Gravity)

User can switch between PSU, PPT and S.G. readings, and each scale is automatically temperature-compensated to ensure that the measurement is precise and accurate.

The PSU scale is fast becoming the universal standard for seawater measurement, and when it comes to buying a refractometer, you would want to invest in a model such as the Milwaukee MA887 Digital Refractometer which supports it.


The specification of Milwaukee MA887 Digital Refractometer:

Range0 to 50 PSU
0 to 150 ppt
1.000 to 1.114 S.G. (20/20)
0 to 80 deg C / 32 to 175 deg F
Resolution1 PSU
1 ppt
0.001 S.G. (20/20)
0.1 deg C / 0.1 deg F
Accuracy+/-2 PSU
+/-2 ppt
+/-0.002 S.G. (20/20)
+/-0.3 deg C / +/-0.5 deg F
Light SourceYellow LED
Measurements TimeApprox. 1.5 seconds
Min. Sample Vol100 microL (cover prism totally)
Sample CellSS ring and flint glass prism
Temp. CompensationAuto between 10 and 40 deg C / 50 to 104 deg F
Case MaterialABS
Battery Type1 x 9V AA (included)
Battery Life5000 reading
Auto-shut offafter 3 minutes of non-use
Dimensions192 x 102 x 67 mm
Weight420 g

About Milwaukee Diagnostic Instruments

Milwaukee manufactures a complete range of diagnostic instruments (such as pH, ORP, temperature testers, monitor and controllers) for water testing. Milwaukee's diagnostic instruments are widely used by aquarists for monitoring aquarium water.

Regardless of which values you need to measure - pH, EC or TDS values, there is a Milwaukee instrument for it.

Milwaukee Instruments Online Shop

N30 is the authorised dealer in Singapore for Milwaukee aquarium diagnostics and testing instruments.

Order your Milwaukee water testers, meters and controllers online today at

About N30

About N30 Tank

N30 Tank Pte. Ltd. is a leading manufacturer of custom-made fish tanks cabinets. As a tank maker, we supply aquarium cabinets to homes and offices locally as well as ship orders worldwide.

N30 provides expertise in the construction of large acrylic aquariums, such as those in Underwater World (Resort World Sentosa). We supply customised storage tanks to fish farms such as Qian Hu, and to major restaurants. The N30 brand name is trusted for quality workmanship in the industry.

N30 has developed unique glass-sealing techniques, which allows us to produce very large tanks (such as 30-feet long) without issue of water leakage. For all custom-made fish tanks, N30 assures customers of Five Years Warranty against water leakage.

To support the needs of aquarium hobbyists, N30 is also offering a wide range of aquarium accessories such as filters, pumps, lighting, wave makers, skimmers... for sale online. We encourage customers to browse and shop online at for accessories. It is convenient and we provide free delivery for orders (see the online store terms and conditions for details).

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Convert points into eVouchers redeemable for discounts on your orders.

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