Water quality test paper, also known as semi-quantitative water quality test paper, is used in food, chemical industry, urban sewage, medical treatment, sewage treatment industry, electroplating industry, agricultural flowers (soil analysis), dairy processing industry and other fields.
Principle and results of water test paper:
When comparing to standard color criteria, refer to the values in the table to determine the test results. If suspicious, repeat testing and further testing if the drinking water sample is positive.
48 mm paper bottles
1. PH: The measurement range of PH value is 5.0 ~ 8.5, generally within 0.5 units.
2. Nitrite: This test is for nitrite, which does not react with other substances in water. Any consistent color of pink should be considered a positive result.
The water test paper bottle should be kept in the room temperature and dry environment, away from all kinds of chemical reagents, avoid direct sunlight. According to the characteristics of the test paper, the choice of good quality test paper packaging mainly consider moistureproof, sealing these two aspects. General test paper packaging USES similar shape bubble wrap test paper bottles, the principle is through the bottle cap desiccant absorption of water molecules, to achieve the drying effect; Sealing is generally achieved through the special design of the bottle cap, because the water test paper bottle needs to be opened and thrown several times to ensure a certain degree of sealing and moisture resistance, so the bottle cap