Hach-Lange LUMISTOX 300 LPV321 User Manual - Manual (Page 10)

LUMIStox 300 Operating Manual Dr. Bruno Lange GmbH
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Page: 10
2.3 Initial settings for luminescent bacteria tests for determining GL
and EC
Initial settings have to be entered for the luminescent bacteria test to enable the GL or
EC value to be calculated. The necessary settings are requested by the LUMIStox 300
after the evaluation mode <GL> or <EC> has been selected. Their significance and the
method of entering them are explained below.
<N> indicates that all the current settings are to be adopted.
The LUMIStox 300 then switches to the start of the
measurement procedure. If <Y> is chosen, the following
settings are requested in sequence.
The length of the dilution series can be entered with the
numeric keyboard (at least 3 and no more than 9 dilution
stages) or the current setting can be confirmed with <ok>.
Preliminary dilution of a toxic sample is rejected with <no >.
The current setting is adopted with <ok>.
After confirmation with <yes >, the required preliminary dilution
can be entered with the numeric keyboard
(not shown). It is taken into account in the EC or GL value.
Only preliminary dilutions from the dilution series referred to in the DIN standard
are therefore allowed for GL determinations.
settings
change ? J N
dilution steps
? 4 ok
pre dilution: no
yes no
ok