Hitachi ZA3000 Series Instruction Manual page 283

NOTES: 1. Sample should be injected at a level within about
1/2 to 3/4 of the sample cup height. If sample is
injected beyond the above level, the nozzle may
dip excessively into the sample to cause carryover.
2. Each volume of reagent, diluent and blank solution
should be calculated in advance according to the
number of measurements and addition volume (or
dilution volume for dilution), and prepare with
some excess volume taking the minimum sample
volume of container into account.
3. A highly viscous samples may not be measurable
with the autosampler.
NOTE: On Influence of Sample Vapor
If a sample is left on the autosampler, the sample
vapor may affect the instrument.
Especially, a sample containing hydrofluoric acid may
damage the optical system of the instrument.
Remove samples from the autosampler after
measurement.
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3.5.4