% 5 %
Calibration should be performed daily before
sample testing begins. For best results,
perform the calibration in a controlled
environment of 68°F (20°C).
Allow the refractometer and the distilled
water to acclimate to the ambient
environment.
Clean the
(3) before and after
every use.
Drop at least 1.0 ml of distilled water (0.0)
onto the
(3).
Close the
(2).
Press the
(9) button to turn on the
refractometer.
Press the
(10) button for 3 seconds
to enter calibration mode.
"CAL" flashes on the display. There will
be a red flash in the
(3).
The calibration is complete after "End" is
displayed.
