question 16: stem and cap easily separated
One simply has to hold the cap in one hand while the other tilts the base of the stem until stem and cap separate.
- if the separation is easy and (relatively) neat in the contact area between stem and cap, the criterion is met;
- if the separation is harder and the rupture is not neat or appears somewhere else, the criterion is not met and the stem and cap are said to be not easily separated.
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