SQmin Minimum Weighing
68 Cubis MSU User Manual
SQmin Minimum Weighing
Purpose: This application is used to compare the measured weight value directly with the
defined minimum sample quantity (SQmin = sample quantity minimum). This
ensures that weighing results are within tolerances defined by your quality assur-
ance system. This fulfils the requirements of the United States Pharmacopeia (USP).
According to USP guidelines, the measurement uncertainty can be a max. of 0.1%
in terms of the initial weight when weighing substances for quantitative analyses.
Requirements: The balance must be set up by a service technician to be able to use the SQmin
function. The technician will determine the permitted minimum sample quantity
and set this on your balance using your QA system’s guidelines. He will document
this setting via a “Weighing module test as per USP” certificate in which the mea -
surements and min. sample quantity are logged. The SQmin function ensures that
the weighing results correspond to USP guidelines.
Combination options: Mass unit conversion, second tare memory, individual identifiers (DKD measure-
ment uncertainty)
Configuring a Task: SQmin Minimum Weighing
D
t Select which function should be triggered for minimum sample quantity.
SQmin flashing: The SQmin tab flashes.
Disable print/save ...: Printout and saving of the weight value are disabled;
the weight value is displayed in gray.
y An overview of all settings is displayed.
t Check all settings and change as required.
y A message asks whether you would like to add another application.
t If required, select additional applications you would like to combine.
y Now you will be prompted to configure the weighing and printing functions.
t Check all settings and change as required.
t Enter a short name and a description for the new task.
t To save the new task, select Save.
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