Combi Flash EX Especificações descarregar pdf (Página 25)

25. When the sample is done running, follow the procedures for cleaning the alumina

crucibles below. If an aluminum pan was used, the crucible can be disposed.

Alumina Crucible Clean Up

General Note: The white alumina crucibles are not disposable and should be reused. Please clean

these after use.

1. After completion of the TGA program, remove the alumina crucible and place it in a

solution of 1 M hydrochloric acid solution. Sonicate the solution to remove as much

charred residue in the crucible. Remove the crucible and rinse with water.

2. The alumina crucible should be placed back in the carousel of the TGA/DSC1. In the

STARe software, open up the Routine Editor. Open the method entitled BURN IN.

Use the name “BURN IN” as the sample name and click Send experiment. Repeat

this step for as many crucibles that need to be cleaned. Hit the Start button in the

lower right hand corner to begin the method.

3. Upon completion, examine the crucible to determine if it is clean. If the crucible is

clean, place it back in the box with the alumina crucibles. If it is not cleaned, sonicate

with 1 M HCl solution again. If this does not clean the crucible, organic solvents and

running the BURN IN method again can be used to finish the cleaning process.

Coupled TGA/MS Runs

1. Steps 1-11 of the General Use should be performed prior to setting up the TGA/MS run.

 In the Routine Editor under Method, select Open. Two methods are available

that take the TGA/MS into account. If only one sample needs to be run, select 25-

500 C; Ar 10 ml/min;70 ul TGA/MS. If multiple samples need to be run, select 25-

500 C; 10C/m TGA/MS auto; 70uL alumina. If this program is not chosen for

multiple samples run sequentially, the MS will shut itself off and you will have no

data. Tough shit. Read next time.

2. To set up the MS portion, select TriggeredRun from the Desktop. This will open up two

windows.

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Combi Flash EX Especificações Página 25