Cuvette Preparation - Hanna Instruments HI83325 Instruction Manual

Proper Use of Dropper Bottle
1. Tap the dropper on the table several times.
2. Remove the cap and wipe the outside of the tip with a cloth.
3. Keep the dropper bottle in a vertical position while dosing the reagent.
Proper Use of Powder Packet
1. Use scissors to open the powder packet.
2. Push the edges of the packet to form a spout.
3. Pour out the content of the packet.

9.3. CUVETTE PREPARATION

Proper mixing is very important for reproducibility of the measurements. The proper mixing technique
for each method is listed in the method procedure.
(a) Invert the cuvette a couple of times or for a specified time: hold the cuvette in the vertical
position. Turn the cuvette upside-down and wait for all of the solution to flow to the cap end,
then return the cuvette to the upright vertical position and wait for all of the solution to flow to
the cuvette bottom. This is one inversion. The correct speed for this mixing technique is 10 to 15
complete inversions in 30 seconds. This mixing technique is indicated with "invert to mix" and
one of the following icons:
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