Unit Verification (Oq); Functional Checking - Selecta DE-1626 Manual De Instrucciones

INSTRUCTION MANUAL CODE 80191 REV D JAN/2020
J
.P. SELECTA s.a.u.

7 Unit verification (OQ)

Once the unit is installed and the operator trained with its operation, the unit could
be qualified.
This process could be used as a Operation qualification (OQ).
There are two basic qualification operations:

7.1 Functional checking

Run this operation during the installation steps and daily for unit warm-up.
Follow chapter 5 instructions to distillate until the unit stops automatically (use Er-
lenmeyer or graduated flask).
When the unit is on the steady state, the distillation rate is between 30 - 40 ml per
minute.
7.2 Checking the maximum etanol loss
This checking is widely used to certify that the unit works properly. Run some of this
tests for training purposes before analizing valuable samples.
It consists on preparing some 10% dilution of distilled water and etanol.
Prepare this solutions by using flask, and solutions at 20ºC and room temperature
at 20±3ºC.
Obtain the distiller (see chapter 6 and chapter 11) 5 consecutive times and measure
the alcohol degree of the distilled. The distilled must have an alcohol degree at least
of 9.9%Vol. In other words, alcohol losses must be lat east of 0.02% per distillation.
After the distillation, compare the original sample with the distilled one.
Note:
To get these results, you must work with high precision:
• Keep part of the hidroalcoholic initial solution to compare with the final
distillated.
• Store all flasks stopped.
• Use only certified volumetric material.
• Work at room temperature 20±3ºC.
• Do meassure only at 20ºC 20±0.5ºC
See chapter 11 for more details.
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