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In powder method, the powder sample is contained in which of the following?

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In powder method, the powder sample is contained in which of the following?

(a) Thin walled glass capillary tubes

(b) Thin walled test tube

(c) Thin walled curvettes

(d) Thin walled flask

I had been asked this question during an interview.

I want to ask this question from X-Ray Diffractometers in division X-Ray Spectrometers of Analytical Instrumentation

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The correct option is (a) Thin walled glass capillary tubes

The best I can explain: In powder method, the powder sample is contained in thin walled glass capillary tubes. Thin walled cellophane capillary tubes can also be used.

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