Hanna Instruments HI 83742 - Manual (Page 11)

11
The instructions listed below should be carefully followed during testing to ensure best accuracy.
• For a correct filling of the cuvet: the liquid in the
cuvet forms a convexity on the top; the bottom of
this convexity must be at the same level of the
10 mL mark.
• For dosing the wine sample, we recommend to
use the supplied Hanna automatic pipettes
(HI 731340 - 200 µL, HI 731342 - 2000 µL).
For a correct use of the Hanna automatic pipette,
please follow the related Instruction Sheet.
• In order to avoid reagent leaking and to obtain
more accurate measurements, it is recommended
to close the cuvet first with the supplied HDPE
plastic stopper
and then with the black
cap.
• In order to measure exactly 5 mL of reagent with the 5 mL syringe:
(a) push the plunger completely into the syringe and insert the tip into the reagent bottle.
(b) pull the plunger up until the lower edge of the seal is exactly on the 5 mL mark.
(c) take out the syringe and clean the outside of the syringe tip. Be sure that no drops are
hanging on the tip of the syringe, if so eliminate them. Then, keeping the syringe in
vertical position above the cuvet, push the plunger completely down into the syringe. Now
the exact amount of 5 mL has been added to the cuvet.
GENERAL TIPS FOR AN ACCURATE MEASUREMENT
Hanna
automatic pipette
(a) (b) (c)
10 mL
18
COLOR HUE
SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS
Range
0.00 to 9.99
Resolution 0.01
Precision ±0.03 @ 0.75
Light Source Tungsten lamp with narrow band interference filters @ 420 and 520 nm
Method Direct reading.
REQUIRED REAGENTS REQUIRED REAGENTS REQUIRED REAGENTS REQUIRED REAGENTS REQUIRED REAGENTS
Code
Description Quantity/test
HI 83742-0 Wine Solvent-1 8 mL
For reagent set and other accessories see page 26.
MEASUREMENT MEASUREMENT MEASUREMENT MEASUREMENT MEASUREMENT
• Press “RANGE” to select the parameter code “P3” for
color hue (see page 13).
SAMPLE PREPARATION SAMPLE PREPARATION SAMPLE PREPARATION SAMPLE PREPARATION SAMPLE PREPARATION
• Replace the cap. This is the sample.
#2
(Sample)
• Use the 2000 µL automatic pipette to add exactly
2 mL of wine sample to an empty cuvet. For a correct
use of the automatic pipette please follow the related
Instruction Sheet.
• Then use the 1 mL plastic pipette to fill the cuvet
with HI 83742-0 Wine Solvent-1 up to the 10 mL
mark. 10 mL