The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated.
- PSU - The newest type scale standard – Letters stand for Practical Salinity Units and is fast become the universal standard for seawater measurement
- PPT - The old standard of Parts Per Thousand of saturated salt. This is the oldest of the 3 seawater measurements scales
- S.G. - The current standard of Specific Gravity hydrometers and refractometers.
The Milwaukee Instruments MA887 digital refractometer is easy to calibrate and easy to read and provides highest accuracy possible for the measurement of seawater 3 specific scales. This is the type of accuracy demanded by today’s professionals and Milwaukee Instruments delivers.
Milwaukee Digital Seawater Refractometer Specifications:
|S.G.:||1.000 - 1.114||0.001||+/- 0.002|
|Temp:||0-80C / 32-176F||0.1 C/F||+/- 2 0.3 C/ +/- 5F|
Junk! By Richard on 1/5/2019Richard wouldn't recommend this product to a friendDid not work at all, won't ever power up. Have had MAJOR issues with the BRS RO/DI unit, now they sell me this completely non-operational unit with ZERO support. Could not be a larger waste of money! EXTREMELY disappointed with Milwaukee Instruments and BRS!
Excellent product By JHV on 11/24/2018JHV would recommend this product to a friendEasy to use
I have had this for almost 6 years and it works great.
Good price and well built.
When this one breaks, I will buy another.
Absolutely Needed By Ray on 11/10/2018Ray would recommend this product to a friendThe best and easiest salinity monitor anywhere! I've had mine over a year and batteries still going strong. Soo easy to use when making salt, checking and re-checking is a breeze. Even self-adapts to water temp... Great product and a must buy!
Excellent tool for serious reefers By Rodney on 10/20/2018Rodney would recommend this product to a friendI have been using this device for a month and a half. Milwaukee has created a great tool for reefers who want to accurately monitor their salinity levels. The process is so simple; just use a pipette to add a little water from your tank to the testing zone, then hit one button to get your reading. If you are serious about your reef, you should definitely consider buying this product. I like to test both of my reef tanks and freshly mixed saltwater, which I can now do in a couple of minutes.
I recommend storing this unit in the box it came in, but cover the top of the unit with a soft cloth. The soft cloth is useful for keeping the glass from getting scratched in the testing zone, and you can wipe the glass off after each test. I generally suck up most of the water after testing with the pipette and then wipe the remaining moisture away with the soft cloth. Paper products are made out of wood that is turned into a pulp, so it is very easy to scratch glass surfaces with paper (no matter how soft you think it is). Keeping a soft cloth with the unit is a great way to make your testing easier.
I know it seems expensive, but certain devices provide so much benefit that they really change the way you approach the activity. Tank testing is time-consuming, and a bit annoying. However, devices like this truly cut time and effort from the process. I highly recommend this device.
Worth every cent. By BRYAN on 10/13/2018BRYAN would recommend this product to a friendIt makes life so much easier.
solid repeatable results By Stumpy the Parakeet on 7/15/2018Stumpy the Parakeet would recommend this product to a friendI believe in redundancy. I own a decent refractometer and this unit from Milwaukee. I came back from vacation and all my sps corals browned-out with no polyp extension. "That's odd, I thought". I titrated all the parameters (ok) Apex recorded normal parameters (ok). I then checked salinity with the refractometer 1.026. I properly calibrated it to make sure, and again it read 1.026. I pulled out my Milwaukee, calibrated it and it read 1.030. I did this three times to each unit. Turns out the refractometer was off even being calibrated. Thanks to MA877- i prevented a heavy costly crash. Now instead of acclimating corals, I am acclimating 100g + reef tank. Thanks BRS for carrying this! Highly recommend for the serious invested reefers.
Gives me confidence By Tom on 7/13/2018Tom would recommend this product to a friendI've just added some "Coralline Algae in a Bottle" to my new tank, and the instructions for the algae emphasize that it is VERY fussy about the salinity of the water. I would have been really nervous about dumping this expensive stuff into water that had been tested with just the Instant Ocean Hydrometer that some store employee talked me into buying—it has never given anything remotely resembling consistent readings. But the MA887 allowed me to slowly tweak my S.G. to the required 1.026, showing consistent results over many tests. The only thing I don't like about it is that I'm nervous about "scratching the prism" on this thing while doing the frequent required cleanings, which I assume would destroy it. I'd be willing to pay significantly extra to have a sapphire window on it (like better cellphone cameras have, to avoid scratched lenses), but I suppose there's no point in holding my breath for that one. If/when I break this thing, I'm pretty sure I'd bite the bullet and buy another.
Great idea. Lousy product By SEAN on 7/9/2018SEAN wouldn't recommend this product to a friendUsing this meter is really convenient and seems to give consistent readings. The trouble is with the build quality of the unit itself. Mine arrived non-functional (no-lt error code). BRS was not helpful in securing a replacement so I contacted Milwaukee directly and paid to the unit shipped back to them for repair/replacement. 10 days later a new unit shows up and functions for all of five weeks and now is failing with the same error code.
Just missing a hard case.... By Geoffrey on 5/31/2018Geoffrey would recommend this product to a friendOverall I am pleased with the refractometer. Makes checking salinity quick and easy. Although I leave mine in my equipment cabinet as to keep accidental bumps down, I find that at this price point it should have came with a hard case to help protect the investment (sold separately).
Didn't even work 9 months By alex on 5/28/2018alex wouldn't recommend this product to a friendI used the bottle of distilled water provided, and tried many different times and in different locations, with shielding of the unit at different levels from the sun/light. My unit simply could not be calibrated using what was provided.
Nice piece of equipment to have By I dig it on 5/26/2018I dig it would recommend this product to a friendI tested it against my manual refractometer and it is spot on....My eyes arent as good as they use to be and this makes it easier for me to read....Its easy to calibrate and use....just make sure you keep it clean.
Nice device. By Steven on 2/24/2018Steven would recommend this product to a friendI like the easy of use and the clear readout. I have trouble reading a refractometer so this works great for me.
Starting at: $27.99
The spec says that the accuracy is +/- 0.002. That is not very good considering my range of interest is between 1.022 and 1.028. Comments?
When I calibrate the machine, the reading is 1.000, not 0 (zero) like the instructions say. The error messages in the instructions do not tell me what to do if a reading of 1.000 shows when trying to calibrate the unit. What is wrong?
There are three different settings to read the salinity with this unit. (PSU/PPT/S.G.). It sounds like you have your refractometer set to S.G. - Specific Gravity, which will read down to the 1000th decimal. You can change your reading by pressing the "Range" button until you get to the PPT-Parts per thousand reading, which will read zero at "0" and properly mixed saltwater at "35ppt". :-)
A question on the accuracy..obviously if it's off by .002 that could be detrimental to a reef aquarium in the long run depending on the nominal salinity value. Most reefs are between 1.024-1.026. However a lot of people seem to like this product. What's BRS experience with this? Do you double confirm samples?
Hi, Does the case come with the Milwaukee refractometer or is it a separate purchase?
This will not come with the case. Feel free to let us know if you have any further questions!
Do you sell the case that is recommended for it?
We sure do. I believe this is the case that you are looking for.