Metrohm 2.946.0010, Руководство пользователя

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5.2 Carrying out the determination of As(total) according to Application Bulletin 416
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Cleaning of the scTRACE Gold
1 Load the example method AB416 Cleaning scTRACE Gold.detp
(see "Loading a method", page 23)
.
2 Fill 18 mL cleaning solution into the measuring vessel (3- 3 ) . Use the
scaling on the vessel to measure the volume.
3 Position the measuring vessel on the base plate (3- 1 ) of the measur-
ing stand. Fit the measuring head, with scTRACE Gold, stirrer and
transparent ring assembled, in a way that electrode and stirrer
immerse into the solution. Press the measuring head down until the
stop.
4 Start the cleaning of the scTRACE Gold as described in Running a
determination (page 25) .
NOTICE
This method does not contain additions. The determination is fin-
ished after 4 replications.
5 When the cleaning is finished remove the measuring head, with
scTRACE Gold, stirrer and transparent ring assembled, empty the
measuring vessel and thoroughly rinse electrode, stirrer and vessel
with ultrapure water.
5.2.3 Running the determination of As(total)
1 Load the example method AB416 Determination As(total).detp
(see "Loading a method", page 23) .
2 Fill 15 mL sample into the measuring vessel (3-
3
) . Use the scaling on
the vessel or a pipette to measure the volume accurately.
3 Add 3 mL electrolyte, using a pipette, e.g. 6.01562.000 which is in
the scope of delivery.
4 Add 100 µL KMnO
4
solution using a micro pipette, e.g. 6.01562.010
which is in the scope of delivery.