2X High Quality 5M PH Alkaline Acid Test Paper Water Litmus Testing for Gardening Aquarium Plant,2 x 5m pH Test Paper,Photo Color

Scale Reads From 1 to 14:
1 - 3 indicates a very acidic substance
4 - 6 indicates an acidic substance
7 indicates neutral
8 - 11 indicates alkalinity

12 - 14 indicates a very high level of alkalinity
PH 1-14 color chart in each pack
The test strip color changes must be matched with the pH scale color chart within about 15 seconds
Instruction:
Simply the testing strip to the object or liquid you are testing.
Half second later, take out the paper and using the color chart included, compare the color change of the paper to find out the acidity level of your testing subject.
Can not indicate the Acid or solution when its density was lower than 0.01%.
Keep dry for the rest paper.
material: paper
Photo Color
Paper length: 5m/16ft
Quantity: 2 Pc

Package Contents:
2 x 5m pH Test Paper

Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.