1 6
1 6
1 6
1 6
1 6
Instruction Manual MA882, MA883, MA884 & MA885 Refractometers
for Wine and Grape Product Measurements
2. While continuing to hold
ON/OFF
, press the
RANGE
key. The LCD will show the
current conversion factor on the primary display and “
P.ALc
” on the secondary
display. Continue holding the
ON/OFF
key. Press the
ZERO
key to increase this
number. The number will continually increase until “
0.70
” is reached then wrap back
to “
C1
”. The user selectable conversion range is 0.50 to 0.70. C1 stands for “curve 1”
(see page 9). When you reach the conversion factor you desire release the
ON/OFF
key. The new conversion factor will be used.
To make a Brix Solution, follow the procedure below:
•
Place container (such as a glass vial or dropper bottle that has a cover) on an analytical
balance.
•
Tare the balance.
•
To make an X BRIX solution weigh out X grams of high purity Sucrose (CAS #: 57-50-1)
directly into the container.
•
Add distilled or deionized water to the container so the total weight of the solution is
100 g.
•
Note
: Solutions above 60 %Brix need to be vigorously stirred or shaken and heated
in a water bath. Remove solution from bath when sucrose has dissolved. The
total quantity can be scaled proportionally for smaller containers but accuracy
may be sacrificed.
Example with 25 %Brix:
%Brix
g Sucrose
g Water
g Total
25
25.000
75.000
100.000
MAKING A STANDARD %BRIX SOLUTION
