Sartorius Quintix User Manual download pdf (Page 37)

Weighing

User Manual for Secura, Quintix, Practum

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

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).

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Sartorius Quintix User Manual Page 37