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QUESTIONNAIRE by marygrace cagungun is a document available to read on EtoBox.

What is QUESTIONNAIRE about?

The document outlines a study aimed at developing marker pen ink using banana peel extract as a natural dye, alongside other ingredients. It includes a rating scale for evaluating the acceptability of the product based on various criteria such as color intensity, odor, texture, viscosity, toxicity, writing performance, and effectiveness. Participants are asked to provide demographic information and rate their agreement with statements related to the ink

Author

marygrace cagungun

Language

EN