18
PHO
TOMETER
7. PHOTOMETER
7.1. COLLECTING & MEASURING SAMPLES AND REAGENTS
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.
Proper Use of Dropper Bottle
1. Tap the dropper on the table several times and wipe the outside of the tip with
a cloth.
2. Always keep the dropper bottle in a vertical position while dosing the reagent.
7.2. CUVETTE PREPARATION
Proper mixing is very important for reproducibility of the measurements. The proper
mixing technique is listed in the method procedure.
The mixing method is indicated with “shake gently“ using one of the following icons: