โครงงานเรื่องการทำน้ำหมึกปากกาไวท์บ

Project on the whiteboard pen ink from roselle flower and mangosteen.
Its purpose is to produce liquid ink whiteboard roselle flower and mangosteen
.The experimental procedure is as follows. How to extract the color of Rosella flower and butterfly pea flower. And study the solvent can be extracted color and can be easily removed. Then experiment with the mangosteen fruit and flowers Roselle 30, 40,.50 g were extracted with alcohol, 30, 20,.10 g, respectively, for 2 weeks, and aqueous ink drop whiteboard pen. Change cotton fiber into bars instead. Tested writing on whiteboards. Measure of the intensity of the tint of the color.It was found that the ratio of solvent ink and alcohol roselle flower Mangosteen alcohol is 40.20 the intensity and easy to clean as possible. The second is the ratio 50: 10 and 30: 30 respectively
.

Water purification project Whiteboard pen ink from Roselle, and mangosteen Peel.
The objective is to produce the ink pen, whiteboard from Roselle, and mangosteen shell
.How do the experiment as follows: Learn how to extract colors from Roselle, and anchan and flower studies find a solvent that can bring color and bite can be removed easily. Then experiment by taking the mangosteen shell suit Roselle, 30, 40, 50 g 20, 30 alcohol bite by quarter, 10 grams, respectively, for a period of 2 weeks, and then bring the substance soluble ink pen from Whiteboard drops by changing a synthetic bone cotton instead. Use written on the White Board based on the criteria of measuring the intensity of color shades. Which found that the substance soluble ink ratio of Roselle flower per stem bark and alcohol: alcohol is 40: There are 20 intensity and easier to clean. Second is the ratio 50: 10 and 30: 30
, respectively.

a framework that makes the ink pen whiteboard from flower's finger and red skins mangosteen
its purpose is to produce ink pen whiteboard from red flower's finger and skins the mangosteen
Learn how to do a free trial as follows: How to extract color from flowers and ice-red flowers and the butterfly pea and learn to find the solvent that can be used to extract color and can be easily removed and then the experiments with the flower's finger and red skins mangosteen 30, 40,50 G, juice with alcohol 30, 20,10 G respectively for 2 weeks, and then the aqueous ink to drip pen whiteboard by changing synthetic swab sticks out as a leader, instead of writing on a white board test using the criteria of measurement of the intensity of shades from the toolbar.It was found that a ratio of aqueous ink red flower's finger to alcohol and skins the mangosteen. alcohol is 40:20 is the intensity and easy to clean, and most secondary. ratio is 50:10 and 30:30 respectively