คุณลักษณะ

• Using a micro tube, each child can experiment with a small amount of starch in a short time.
• A swab is used for fluid collection.
• The resistance of children will be reduced.
• It is very easy to make starch solution by using substitute starch of the pack test type.
• A very small amount of reagent is OK.
• It is easy to prepare and clean up the experiment.