When does dwell time begin for wet non-aqueous solvent suspended developers?

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Prepare for the Surface Methods - Liquid Penetrant Inspection (LPI) Exam. Utilize flashcards and multiple-choice questions with detailed hints and explanations. Ace your exam with confidence!

Multiple Choice

When does dwell time begin for wet non-aqueous solvent suspended developers?

Explanation:
Dwell time is the period allowed for the developer to interact with the penetrant and form surface indications. With wet non-aqueous solvent suspended developers, the developer is applied as a liquid carrying solvent, so development begins immediately as soon as the developer is on the surface. The penetrant that has entered flaws starts to be drawn out and indicators begin to form right away, so the dwell time starts at the moment of developer application. Waiting for the surface to dry would delay development and alter the indication characteristics.

Dwell time is the period allowed for the developer to interact with the penetrant and form surface indications. With wet non-aqueous solvent suspended developers, the developer is applied as a liquid carrying solvent, so development begins immediately as soon as the developer is on the surface. The penetrant that has entered flaws starts to be drawn out and indicators begin to form right away, so the dwell time starts at the moment of developer application. Waiting for the surface to dry would delay development and alter the indication characteristics.

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