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
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Fold the cover-disc and weigh it into a crucible and prepare the vessel. |
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Set the ‘MISFIRE LIMIT’ =0 (to allow small CV’s) |
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Run a determination |
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Enter the obtained CV via the keyboard in ‘SPIKE VALUE’ |
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If EASY spike used: Read ‘READ LAST N_RISE’. Enter value in ‘CAPSULE RISE’ |
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Set the ‘MISFIRE LIMIT’=0.44 |
Measure the CV of the volatile sample (with traditional spiking method)
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Make sure that the ‘SPIKE VALUE’ was entered. Step ‘d’ above. |
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Tare the empty crucible |
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Stick the cover disc on to the crucible rim |
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Weigh the crucible and the cover disc. |
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This is the Spike mass. It must be entered manually with: ‘SPIKE MASS’. This enables spiking! |
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Tare the balance |
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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. |
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Enter this weight as the sample mass |
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Prepare the vessel normally. Put the cotton thread on top of the cover disc |
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Run the sample |
Measure the CV of the volatile sample (with EASY spiking method)
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Make sure that the ‘CAPSULE RISE’ was entered. Step ‘e’ above. |
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Enable EASY spiking ‘SET CAPSULE EN’=YES |
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Stick the cover disc onto the crucible rim |
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Tare the balance |
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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. |
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Enter this weight as the sample mass |
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Prepare the vessel normally. Put the cotton thread on top of the cover disc |
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Run the sample |
