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The refractometer is an optical instrument that uses refractive index measurement to determine the salinity of natural and artificial seawater, seawater or brackish intermediates.
The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable.
The MA887 refractometer is a simple and quick to use optical device. Samples are measured after simple user calibration with distilled or deionized water. Within seconds, refractive index and temperature are measured and converted to one of three popular units of measurement; Practical Salinity Units (PSU), Salinity in parts per thousand (ppt), or Specific Gravity (SG (20/20)). All conversion algorithms are based on respected scientific publications using the physical properties of seawater (not sodium chloride). Temperature (in °C or °F) is also displayed on the large dual-level display along with helpful message codes.
Key features include:
The MA887 refractometer is a simple and quick to use optical device. Samples are measured after simple user calibration with distilled or deionized water. Within seconds, refractive index and temperature are measured and converted to one of three popular units of measurement; Practical Salinity Units (PSU), Salinity in parts per thousand (ppt), or Specific Gravity (SG (20/20)). All conversion algorithms are based on respected scientific publications using the physical properties of seawater (not sodium chloride). Temperature (in °C or °F) is also displayed on the large dual-level display along with helpful message codes.
Key features include:
Product Details
MA887
Reviews about this product
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Jose Manuel G.
Published Oct 17, 2026 at 05:08 pm (Order date: Oct 09, 2026)Very easy, convenient, and above all, it looks great!!! (Translated review)
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Rainier A.
Published Aug 09, 2026 at 07:07 pm (Order date: Aug 04, 2026)Exactly what I wanted and super fast delivered. For a swimming pool it could be more precise (in tenths) but this one does not do that. (Translated review)
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Jose antonio E.
Published Jul 13, 2026 at 10:57 am (Order date: Jul 05, 2026)Everything perfect (Translated review)
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Christian b.
Published Jun 23, 2026 at 06:42 pm (Order date: Jun 12, 2026)Great tool. (Translated review)
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Ismael T.
Published Jun 07, 2026 at 04:16 pm (Order date: May 28, 2026)All good (Translated review)
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Javier N.
Published Feb 02, 2026 at 08:08 am (Order date: Jan 24, 2026)Totally recommended. Very reliable and quick to use. (Translated review)
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Piercarlo C.
Published Oct 26, 2025 at 10:58 am (Order date: Oct 18, 2025)Excellent product, well made, perfect for seeing corals and more up close. (Translated review)
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Damien C.
Published Oct 11, 2025 at 07:44 am (Order date: Oct 01, 2025)Works very well (Translated review)
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Paolo M.
Published Feb 25, 2025 at 06:37 pm (Order date: Feb 19, 2025)Excellent (Translated review)
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Federici s.
Published Oct 25, 2024 at 03:17 pm (Order date: Oct 17, 2024)Excellent (Translated review)
MILWAUKEE - Precision Refractometer