New Refractometer

Big Larr · Dec 19, 2014

When buying a new refractometer should you calibrate it before using it or should it be good to go

143MPCo · Dec 19, 2014

calibrate, calibrate, calibrate... also "calibration" and readings should be done under the same light source each time.

Big Larr · Dec 19, 2014

Thank you so much will definitely do

Big Larr · Dec 19, 2014

Have you heard of using rodi to calibrate with and what do you think about it

143MPCo · Dec 19, 2014

Big Larr said:
Have you heard of using rodi to calibrate with and what do you think about it

That's correct... RO/DI at 0-TDS is needed to calibrate it to zero.

phillrodrigo · Dec 19, 2014

I would buy a calibration fluid. They aren't expensive. I believe Randy has a recipe for a calibration fluid. You should calibrate closest to what your testing. Rodi may be close buy will be off some.

Big Larr · Dec 19, 2014

Thank you all very much

143MPCo · Dec 19, 2014

My Milwaukee Instruments Seawater Digital Refractometer came with calibration fluid, and was used to calibrate the unit... Just happens I also tried RO/DI water with the unit and it was spot on... If you have "calibration fluid" use it but if you're in a pinch I personally feel 0-TDS RO/DI will also work.

Big Larr · Dec 19, 2014

Awesome thank you

New Refractometer

Big Larr

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143MPCo

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Big Larr

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Big Larr

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143MPCo

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Big Larr

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143MPCo

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