3 Pack Ph.1-14 Test Paper Extensive Test Paper Litmus Test Paper 240 Strips Ph T
The test strip color changes must be matched with the pH scale color chart within about 15 seconds. Different pH content discoloration range is different, by comparing the color card ratio: the smaller the number, the stronger the acidity, the larger the value, the stronger the alkalinity.
240 Strips Litmus pH Test Paper 1-14 Extensive Testing Case Saliva Urine 3 Pack
Clear Color Chart: Easily read your results—the smaller numbers indicate a stronger acidity, while the larger values represent a stronger alkalinity.