Sartorius Secura 224-1S - SQmin Minimum Weighing (Secura only)

44
Weighing
User Manual Secura
®
, Quintix
®
, Practum
®
7.2 SQmin Minimum Weighing (Secura
®
only)
Purpose: This function is used to compare the weight value with the defined minimum sample
quantity (SQmin = sample quantity minimum). This ensures that weighing results are
above the specified minimum weight defined by your quality assurance system. This
function is used to observe the minimum weight in order to meet the criteria of the
United States Pharmacopeia (USP), for example.
SQmin is not the same as the minimum capacity Min in legal metrology.
Prerequisites: 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
load this to your balance using the guidelines of your QA system. He will document
this setting via a “Weighing module test as per USP” certificate in which the
measurements and min. sample quantity are logged. The SQmin function ensures that
the weighing results correspond to USP guidelines.
Switching SQmin On/Off
If the SQmin function is set up on the balance, go to the
Settings menu, Weighing –
SQmin to switch it on/off.
Display of SQmin Function during Weighing
t Place the sample on the weighing pan.
Max 220 g
SQmin 0.1200 g
d
=
0.0001 g
0.1037
+
y The SQmin value is displayed in red if the weight value is smaller than the
specified minimum weight.
The weight value is displayed in gray if it is smaller than the specified SQmin
value. The weight value cannot be saved or printed out in applications
(depending on the setting in the “Safety level” menu).