Mettler Toledo GA42 Operations Instructions download pdf (Page 25)

METTLER TOLEDO DL36 23

Sample determinations

9. Sample determinations

9.1 Weight transfer from a balance

You have selected a variable weight as a calculation parameter (see Section 7.3.2) and

"before the titration" as the entry for the weight and sample identification (see Sections 8.6

and 8.7).

Notice: The mass unit of the balance must be set to g!

The anolyte solution is anhydrous, its drift stable (see Section 6).

– Siphon off your sample with a syringe, place the syringe on the balance and tare to 0.

– Press the Run key:

ID ?

2 Start

Samp.In.

– Enter the sample identification and confirm with Enter.

"Start" and "Samp.In." (sample injection) appear alternately

in the display.

– Inject the sample and replace the empty syringe on the

balance.

– Press the Run key:

The weight is requested.

– Press the Select key:

The value shown on the balance is transferred.

– Press the Run key: The titration starts. An audio signal

sounds when the titration is at an end; the result is dis-

played and printed out.

Weight? 0.1873

Weight? 0.0

If you have selected "after the titration" as the entry for weight and sample identification, both

parameters are requested when the titration is at an end. An audio signal sounds and the

following is displayed:

Weight? 0.1873

Weight? 0.0

The weight is requested.

– Press the Select key:

The weight shown on the balance is transferred.

– Confirm with Enter:

– Enter the sample identification and confirm with Enter.

The result is displayed and printed out after the calculation.

ID ?

2 0.02343 %

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 43 44

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Mettler Toledo GA42 Operations Instructions Page 25