K2SO4 in agar-agar is for_______________?
Correct answer: A. Accelerating the setting stage of gypsum
- A. Accelerating the setting stage of gypsum
- B. Increase strength
- C. Give dimensional stability
- D. None of the above
Explanation
Potassium sulfate in agar impression material counteracts agar's retarding effect on gypsum and accelerates the setting of the gypsum cast. It is not mainly included to increase the impression's strength or dimensional stability.
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