Ao Ke Xin Gai Nian 80x universal indicator paper 1-14pH *new*

Indicator paper for testing pH value of various fluids. Just tear a piece, moisten it with the solution you want to test and observe the color change. Reference colors are indicated inside the cardboard package.

Test slips technical details:

• Slip material:
  • Paper, which is impregnated with (most likely) a coctail of following ingredients:
    • Thymol blue (first transition), which operates in a region:
      • Red 1.2...2.8pH Yellow
    • Methyl orange, which operates in a region:
      • Red 3.2...4.4pH Yellow
    • Methyl red, which operates in a region:
      • Red 4.8...6.0pH Yellow
    • Bromothymol blue, which operates in a region:
      • Yellow 6.0...7.6pH Blue
    • Thymol blue (second transition), which operates in a region:
      • Yellow 8.0...9.6pH Blue
    • Phenolphthalein, which operates in a region:
      • Colourless 8.3...10.0pH Fuchsia red (for us men bright purpple)
    • And some other magic unknown to us, which reaches all the way up to 14pH
• Quantity of test strips:
  • 80pcs
• Strip size:
  • 8,5x54mm
• Reference color scale increments:
  • 1...14pH in a steps of 1pH