how to make a PH paper test strip?

Wanna make your own PH paper test strips for science experiment ? This is a variety of different types to try now！ 

You should know this :

1. Use only distilled water when preparing the pH paper test strips.
2. Use only acid-free "art" paper. There are a number of good inexpensive brands available.
3. Obtain an earthenware plate or dish. Fill with the chosen concoction that has been prepared using distilled water.
4. Immerse the paper into the dish carefully. Ensure that you wet the paper uniformly.
5. Allow to dry. It must dry in a place that has no acidic, ammonia or other vapors that might affect the paper and its ability to work.
6. Store paper that has been made in bottles jars or cases.
7. Select the concoction of choice from the following suggestions.

A. Cabbage Paper Test Strips

 

1. Make a strong infusion of red cabbage leaves.
2. Strain the infusion.
3. Allow it to evaporate with a gentle heat until it is considerably reduced.
4. Dip the paper in (as described above) and dry it in the air.
5. Note that the results will be:
   
   
   • Paper stripes of a grayish color
   • Alkalies change the paper to green; acids to red.
6. Be aware that this is a very delicate test.

http://youtu.be/eNrjtDGC0EA

B. Dahlia Paper Test Strips

 

1. Prepare an infusion from the petals of violet-dahlias.
2. Make this infusion in the same manner as the cabbage paper test strips above.
3. Note that the results will be the same as the cabbage paper.

C. Elderberry Paper Test Strips

1. Stain the paper with the juice of the berries. There is no need to add water to the juice.
2. Note that the results will be that the blue color is:
   
   
   • changed to red by acids.
   • changed to green by alkalies.

D. Blue Litmus Paper Test Strips

1. Bruise 1 ounce of litmus in a mortar.
2. Add boiling water to the litmus and pulverize together.
3. Put the mix into a flask and add boiling water to make up to half a pint.
4. Strain when cool and dip the paper in the resulting mix as per instructions above. More color may be extracted from the litmus by using hot water, but the liquid will need to be concentrated through evaporation.
5. Note that the acids will change the color to red, but it does not become green with alkalies.

E. Red Litmus Paper Test Strips

1. Follow the same instructions as for the blue litmus paper.
2. Add to the strained infusion a few drops of nitric acid, or of pure acetic acid. Pour a milliliter of diluted nitric acid (HNO3) into a test tube.
3. Test with litmus and watch for color change. Repeat with the cabbage juice paper. Repeat with the turmeric paper.
4. Note that an alkali will change the color to blue, but the red paper does not become pink when exposed to acids.

F. Rose Paper Test Strips

 

1. Make a strong infusion of the red rose petals.
2. Dip unsized paper in it.
3. Note that when this test paper is dipped in a weak alkaline solution, it will turn a bright green color.

G. Rhubarb Paper Test Strips

 

1. Dip the paper into a strong infusion of rhubarb and dry it.
2. Note that when the rhubarb paper is used, alkalis will turn it brown.

H. Starch Paper Test Strips

1. Place a starch paste on the paper. Cotton cord can be used instead of paper.
2. Note that this is used as a test for iodine, which turns it blue.

I. Turmeric Paper Test Strips

 

1. Boil 1 ounce of coarsely powdered turmeric root in half a pint of water for half an hour.
2. Strain.
3. Dip paper in the liquid and dry it.
4. Note that the paper will be turned brown by alkalis, and also by boracic acid and borates.

Warning:

• Handle the test strips with clean dry hands only.
• Handle any acids with great care and under supervision of a responsible person, such as a science teacher if you are doing a class project. Wear appropriate gear for handling any of the substances.
• Keep the prepared strips in a cool, dark, dry airtight container.

Things you will need:

• Distilled water
• Earthenware dish or plate
• Chosen vegetable or mineral matter
• Paper strips
• Clean, dry drying area
• It works best with red cabbage

 GREAT SCIENCE EXPERIMENT - Food Test - Indicator Strips - PH Solution：

 http://youtu.be/y7NEHxH5Ys0