15
PHO
TOMETER
7. PHOTOMETER
7.1. METHOD SELECTION
Press
Methods
when in measurement mode
to access the list of methods. Use the
keys to highlight the desired method then press
Select
.
The selected method will be saved when the instrument is powered off.
7.2. COLLECTING AND MEASURING REAGENTS AND SAMPLES
7.2.1. PROPER USE OF POWDER PACKET
(a) Use scissors to open the powder packet
(b) Push the edges of the packet to form a spout
(c) Pour out the content of the packet
To conserve battery, the meter will turn off automatically after 15 minutes of
inactivity. If a zero reading has been done but not a read, auto‑off time is increased
to 30 minutes.
7.2.2. PROPER USE OF SYRINGE
a) Push the plunger completely into the syringe and
insert the tip into the solution.
(b) Pull the plunger up until the lower edge of the
seal is exactly on the mark for the desired volume.
(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. Then, keeping the syringe
in vertical position above the cuvette, push
the plunger down into the syringe, the desired
volume has been delivered into the cuvette.
