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Premium Aquatics Refractometer with LED light

Today we are taking a look at Premium Aquatics Refractometer with LED light. We are going to take a quick look at this refractometer and see how it operates and how to calibrate a refractometer.
Refractometer Calibration Fluid:
Premium Aquatics Lighted LED Salinity Refractometer
This model includes an LED lighted lens cover. 
So you no longer need to take your refractometer to a bright room or outside to see the scale. Just push down on the LED tab and lights up your scale to easy take a reading, even in a completely dark room. We also include an additional standard ring and lens cover. So if you ever decide you want to change from the LED to a standard, you just easily remove the ring and cover and swap out.