Sartorius Signum 3 Operating Instruction

SQmin Function
Purpose
To display the allowable minimum
sample quantity “SQmin” in accordance
with the United States Pharmacopoeia
(USP). According to USP guidelines,
the uncertainty of measurement
may not exceed 0.1 % of the sample
quantity when substances are weighed
with the highest degree of accuracy for
volume determination. This additional
function ensures that weighing results
lie within defined tolerance limits
corresponding to the requirements
of your quality assurance system.
Features
– The service technician will determine
the required minimum sample quantity
based on your quality assurance
requirements at the location where the
scale is set up, and save this value in
the scale. This setting cannot be
changed by the user.
Once this programming is concluded,
the service technician will prepare
a “Test in Accordance with the USP”
certificate that documents the measure-
ments and the minimum sample
quantity for the scale. When you use
the SQmin function, you can be sure
that the weight results will correspond
to the specifications on the certificate
and, therefore, USP guidelines.
– Displaying the minimum sample
quantity:
The value is shown in the text line for
4 seconds after the k key is pressed.
– If the minimum sample quantity
has not been reached, the
a symbol
is shown on the readout during weigh-
ing, and the weight values are marked
with an exclamation point (“!”) on
the printout.
– GMP header: The minimum sample
quantity entered for SQmin can be
included on the printout.
Factory settings:
Display: SQmin Off
Print in GMP header:
Off
SQmin Display * Off
On
Printed in * Off
GMP header On
* = factory settings
See also “Operating Menu Overview” in the chapter entitled “Configuration.”
§ Press ) to save your settings and ( (repeatedly) to exit the operating menu.
Operation
46

Sartorius Signum 3 Specifications

General

Brand	Sartorius
Model	Signum 3
Category	Scales
Language	English