The following causes are possible.
• A vial in the handover position was not removed before starting analysis.
• Grip was not firm enough. Vial dropped when it was being lifted.
• Vial hit an obstacle during transport and ended up dropping.
• Grip was not firm enough. Vial dropped when it was being lifted.
• Vial hit an obstacle during transport and ended up dropping.
Check and perform the following.
• Check for any vial left from the previous sampling.
• Check for any vial left from the previous sampling.
• Redo the teaching using the vial to be used for actual analysis.
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