Owner's manual

16
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The rubber eyecup can cause skin irritations if in
contact with skin for longer periods of time. In this
event, please contact your doctor.
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If possible, do not touch lenses with your fingers!
Warning!
Never leave children unsupervised with
the packing material as this can cause
suffocation.
This device is not intended for use by persons
(including children) with reduced physical, sensory
or mental abilities or who lack experience and
/ or knowledge, unless they are supervised by a
person who is responsible for their safety or unless
they receive instructions from this person on how
the equipment is to be used. Children must be
supervised in order to ensure that they do not play
with the device.
Do not leave packaging material around carelessly
as this can become a dangerous toy for children.
Packaging could contain a small white bag with
pellets. Do not open this bag. It is intended to keep
the device dry during transport.
BEFORE INITIAL USE
Remove protective film (if included) from prism
surface [2] and ensure the rubber eyecup is in the
correct position.
OPERATION / MEASUREMENT
The refractometer can quickly and precisely deter-
mine the content of anti-freeze agents in the coolant
circuit and windscreen washer system in your
vehicle. In addition, it has the option to determine
the acid density of the battery acid in your vehicle
battery. The measuring device must be adjusted to
establish correct measurements.
Zero Point Adjustment
1. Fold the prism cover [1] up.
2. Apply a few drops of distilled water [8] to the
prism surface [2].