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3. Calibrate the Hydrometer
TIP The hydrometer is designed to work with 90% IPA or higher and
will not work with IPA less than 90% nor any alternative solvent. After
calibrating in fresh IPA, the hydrometer will only be eective for
measuring IPA of the same concentration. The hydrometer can also
be calibrated in a smaller container of fresh IPA.
To calibrate the hydrometer, hold the handle and release the tool in the
wash bucket’s fresh IPA. Slide the O-ring along the ribbed stem until
the O-ring aligns with the short wings at the top of the float. Leave the
O-ring in this position. The alignment of the wings and O-ring will be
used to check the resin concentration of IPA between washes. Store
the hydrometer in the tool storage.
Float
Handle
Short Wings
Tall Wings
Weight
O-ring
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