Other Sellers on Amazon
Add to Cart
$95.95
+ Free Shipping
Sold by: Premium Aquatics Inc
Add to Cart
$95.97
& FREE Shipping on eligible orders. Details
Sold by: Amazon.com
Add to Cart
$96.00
+ $5.20 shipping
Sold by: AnaTek Instruments
Have one to sell? Sell on Amazon

Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution

4.6 out of 5 stars 89 customer reviews
| 10 answered questions

List Price: $105.00
Price: $95.95 & FREE Shipping. Details
You Save: $9.05 (9%)
Only 1 left in stock.
Sold by SaltwaterAquarium and Fulfilled by Amazon. Gift-wrap available.
18 new from $95.77

Specifications for this item
Brand Name Milwaukee
Part Number MA887
Number of Items 1
Color Yellow
EAN 4250318920200 , 0712542171123 , 0810666006007 , 0810666008872
Import Designation Imported
Item Weight 1.5 pounds
Measurement Type Salinity , Temperature
Overall Height 67  mm
Overall Length 192  mm
Overall Width 102  mm
Size Salinity, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution
UNSPSC Code 41115312
UPC 810666006007 , 712542171123 , 810666008872

pH Testers

pH Testers
View our selection of pH Testers, including pH Test Strips and pH Meters.

Frequently Bought Together

  • Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution
  • +
  • Plastic Transfer Pipettes 3ml, Gradulated
Total price: $98.53
Buy the selected items together

Product Features

  • Laboratory tested
  • Yellow led display

Product Description

Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution has a number of industrial applications. Samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of three popular measurement units; Practical Salinity Units (PSU), Salinity in parts per thousand(ppt), or Specific Gravity (S.G. (20/20))

Product Details

Manual [PDF]
  • Product Dimensions: 8 x 5 x 3 inches ; 1.5 pounds
  • Shipping Weight: 14.4 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B007Z4ITWU
  • Item model number: MA887
  • Batteries 1 9V batteries required. (included)
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (89 customer reviews)
  • Amazon Best Sellers Rank: #8,496 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By C. Lee on September 28, 2012
Verified Purchase
For the price this thing is amazing especially being that its more expensive competitor is just a repainted version. I have been keeping saltwater tanks for about 15 yrs. I have always used a hydrometer. I stopped using a refractometer because they were a pain to read, rusted, etc. Lately i have broken 2 hydrometers and I was like wth lets see if this is any good. Read the instructions and was kinda mad i had to calibrate this thing every time I used it but ill get to that later. What i love is this will give you a reading in many of the most common units. I use SG but some people use other systems. It also tells you the temp of the sample and adjusts. I havent figured out if I can change the reading to deg F though. Not sure if you could. The accuracy of this thing is dead on. Meaning once I zero'd it out with RO water, I could always get back to zero by using RO water. I also tested by making 3 buckets with measured amount of salt and water. The SG was identical. I also tried using it without calibration a week later and it was dead on. How do I know? I just put a sample of RO on it and it was 1.000. I really love using this thing.
Comment 11 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I've got a 65gallon saltwater tank, and use this to measure the salinity. All I can say is WOW! I should have had this sooner.

After a simple "no-salt" calibration, this gives the salinity and temperature of my water perfectly. This is so much better and more reliable than the swing-arm hygrometer.

I've had it for 4 months now, and do a weekly water change. I have not had to change the batteries yet.

Thanks to the previous reviewers upon whose advice I based the purchase decision. This is a terrific addition and you'll want a digital refractometer if you spend any time at all with saltwater aquariums. Highly recommended.
Comment 5 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I am just beginning to start up my first saltwater tank and from all of the forums I have read refracometers are much more accurate than the typical $10 hydrometer. There are middle of the road refracometers for about $50 but require precise lighting conditions to get an accurate reading. Upon my research I came across this digital refractometer and began to read some reviews online. People seem to be very pleased so I decided to give it a shot. Especially since I will be using this on a weekly basis, I wanted something reliable and easy to use.

Each time I use this I start off with a little eye dropper of RO/DI water and always get a perfect 1.000 SG reading. Then I do the same method with saltwater and it works everytime. I double checked the first few times with my cheapo hydrometer and it is right on the money.

This is a little on the expensive side...but I wanted something easy, reliable and accurate and this is what I got. So far A+ on this unit. It measures salinity in 3 ways and even adjusts for temperature. I don't think it gets much better than this.
Comment 5 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
We have an aquaculture business and depend on this refractometer daily to give us easy to take and accurate readings of our coral grow out tanks.
We have thousands of dollars invested in or business and need high quality equipment to help us maintain it.

Easy to calibrate and use.
Few tips,
First of, Read the instructions
Do not try to use under bright light, you will get a error message
And use a soft clean cloth to wipe the glass piece after each use
Comment 2 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
Love this thing!!!! This device is a must if you have a saltwater aquarium. Have only had my aquarium for a couple of months but have used this little gem time and time again. Easy to use and the readouts are clear and accurate. Highly recommended!!! Don't wait to buy this thing, you are going to love it.
Comment One person found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
I struggled with small cheap plastic hydrometers for many years and I've always doubted their accuracy, mainly because of air bubbles and degradation of the plastic as it ages. I've seen people use the optical ones but they are always pointing them at the room light to try to get a reading. It's nice to have something really accurate for a change that you can read in any light, I especially like that it takes into account the temperature! I'm amazed at the low price, this could easliy sell for $300 or more. It's really fast and easy to use. If there was one thing I could change it would be that I wish it had one more decimal place so you can tell if it's between for instance 1.023 and 1.024. If it read 1.0235 that would be awesome, but realistically the small changes in salinity between numbers won't have an effect on your aquarium.

For those new at changing water I can share my method. I have a 14 gallon nano cube and I change 2 gallons twice a week. I measure out my water in gallon water jugs, similar to milk jugs only they had distilled water in them. I fill them with RODI water for my salt mix. Then I weight out 293 grams of Kent Marine Reef Salt Mix using a gram scale. That brings the salinity to 1.024 (263 grams will bring it to 1.021). Then I pour one gallon of water in a five gallon plastic jug, pour in the salt, cap and invert to mix several times. Then I pour in the last gallon rinsing out my salt container in the process, cap and invert to mix again. This initial mixing puts most of the salt into solution. Then I add a small powerhead and aquarium heater for a few hours and everything goes into solution without any further mixing. Then using two other gallon jugs I empty out exactly two gallons and pour in the fresh saltwater. Works like a charm!
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews