AquaCare R100 Bedienungsanleitung Seite 3

This Refractometer is designed for testing the
concentration of salt water and brine. It provides
a direct reading of the specific gravity and con-
centration (parts per thousands = ppt) of salt wa-
ter. It provides reliable refractive index and salin-
ity readings of total dissolved solids in aqueous
solutions. It is used for quality control in research
and clinical laboratories. It can be used to check
and maintain stock solution and dilutions. In the
food industry it is especially effective I the prepa-
ration of frozen vegetables, fruits, seafood and
ocean byproducts. The Salinity Refractometer is
also used in oceanography and sea water studies
for determining soil quality. – The model is sup-
plied with an automatic temperature compensa-
tion (ATC).
Operation steps
1. Open daylight plate and place 2-3 drops of dis-
tilled or reverse osmosis water on the main prism.
Close the daylight plate so the water spreads
across the entire surface of the prism without
bubbles or dry spots. Allow the sample to tem-
perature adjust on the prism for approximately 30
seconds before going to step 2. This allows the
sample to adjust to the ambient temperature of the
Refractometer.
2. Hold daylight plate on the direction of a light
source and look into the eyepiece. You will see a
circular field with graduations down the center
(you may have to focus the eyepiece to see
clearly the graduations). The upper portion of the
field should be blue, while the lower portion
should be white.
3. Look into the eyepiece and turn the calibration
screw unit the boundary between the upper blue
field and the lower white field meet exactly on
the zero scale. That is the end of the calibration
process. Make sure the ambient room temperature
is correct for the solution you are using (20±1°C).
When working temperature of the room or envi-
ronment (not the sample) changes more the 1°C,
we recommend calibration to maintain accuracy.
Once calibrated, shifts in ambient temperature
b-refra.DOC, Aug. 11
Instruction manual of
Hand Held Refractometer
- 3 -
within the acceptable range (10-30°C) should not
effect accuracy.
4. Open the daylight plate and wipe the fluid from
daylight plate and main prism with a soft clean-
ing cloth. Now place 2-3 drops of the sample to
be tested onto the main reading. Take the reading
where the boundary line of blue and white
crosses the graduated scale. The scale will pro-
vide a direct reading of the concentration.
Attention!
1. Accurate measurement depends on careful cali-
bration at 20°C. The prism and sample must be at
the same temperature for accurate results.
2. Do not expose the instrument to damp working
conditions and do not immerse the instrument in
water. If the instrument becomes foggy, water has
entered the body. Call a qualified service techni-
cian or contact your dealer.
3. Do not measure abrasive or corrosive chemi-
cals with this instrument. They can damage the
prism's coating.
4. Clean daylight plate and prism between each
measurement using a soft, damp cloth. Failure to
clean the prism on a regular basis will lead to in-
accurate results and damage to the prism's coat-
ing.
5. This is an optical instrument. It requires careful
handling and storage. Failure to do so can result
in damage to the optical components and its basic
structure. With care this instrument will provide
years of reliable service.
Warranty
You have 24 months warranty on all AquaCare
units excepts spare parts like air stones. You have
no warranty if parts are broken by violent. If you
send a warranty unit to AquaCare please send the
dated receipt, too.
Technical data see last page