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Old 03-27-2010, 07:40 PM   #1
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MA877 Digital Refractometer SG for Saltwater by Milwaukee Instruments

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MA877 Digital Refractometer SG for Saltwater by Milwaukee Instruments.

The MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.


* Range:
PSU: 0 - 50
PPT: 0 - 150 S.G.: 1.000 - 1.114

* Resolution:
PSU: 1
PPT: 1
S.G.: 0.001
Temp: 0.1 C/F

* Accuracy:
PSU: ±2
PPT: ±2
S.G.: ±0.002
Temp: ±0.3C / ±0.5F
Temp: 0 - 80C / 32 - 176F

* Calibration: automatic

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Old 03-28-2010, 12:28 PM   #2
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I can't the manual for this meter at their site, so how about telling us how it works.
How do you calibrate it?
How often should it be calibrated?
What is the sample size needed?
How long does a test take?
What are the steps for taking a test?

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Old 03-29-2010, 02:08 PM   #3
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Manuals for these units should be available through Milwaukee website within next 1-2 weeks.
You can calibrate it with salinity calibration fluid or RO water. It is recommended to calibrate these meters every few uses just to make sure that it is right on spot. Calibration takes only a minute or two.
Testing is simple. Place few drops of your saltwater into the depression pan on the right side of the meter and select the scale in which you want the result displayed.
Just like calibration, testing takes only minutes.
Please let me know if you have any additional questions.


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refractometer, salt, saltwater

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