How to do it
The procedure is the standard procedure for spiking. The crucible cover disc (CAL2K-FLDS) is the spike. The CV of the cover disc must be measured if not done already.
Measure the CV of the cover disc (traditional and EASY) once
 |
Fold the cover-disc and weight it in to a crucible and prepare the vessel. |
 |
Set the ‘MISFIRE LIMIT’ =0 (to allow small CV’s) |
 |
Run a determination |
 |
Enter the obtained CV via the keyboard in ‘SPIKE VALUE’ |
 |
If EASY spike used: Read ‘READ LAST N_RISE’. Enter value in ‘CAPSULE RISE’ |
 |
Set the ‘MISFIRE LIMIT’=0.44 |
Measure the CV of the volatile sample (with traditional spiking method)
 |
Make sure that the ‘SPIKE VALUE’ was entered. Step ‘d’ above. |
 |
Tare the empty crucible |
 |
Stick the cover disc on to the crucible rim |
 |
Weigh the crucible and the cover disc. |
 |
This is the Spike mass. It must be entered manually with: ‘SPIKE MASS’. This enables spiking! |
 |
Tare the balance |
 |
Fill a syringe with the volatile liquid. Pierce a hole in the cover disc and inject a small amount of the liquid until the target weight is reached. |
 |
Enter this weight as the sample mass |
 |
Prepare the vessel normally. Put the cotton thread on top of the cover disc |
 |
Run the sample |
Measure the CV of the volatile sample (with EASY spiking method)
|
Make sure that the ‘CAPSULE RISE’ was entered. Step ‘e’ above. |
|
Enable EASY spiking ‘SET CAPSULE EN’=YES |
|
Stick the cover disc on to the crucible rim |
|
Tare the balance |
|
Fill a syringe with the volatile liquid. Pierce a hole in the cover disc and inject a small amount of the liquid until the target weight is reached. |
|
Enter this weight as the sample mass |
|
Prepare the vessel normally. Put the cotton thread on top of the cover disc |
|
Run the sample |
