• Services
  • Documents
  • Support
  • About
  • Pay an Invoice
  • Contact Us
  • Product Menu
  • Qualitative Tests
  • Humidity and moisture tests
  • Filtration and extraction

  • Personal & Professional Care

  • Qualitative pH Tests

    pH Paper

    These papers do not require the need for a colour chart as their purpose is to demonstrate qualitative analysis in a simple ‘yes’ and ‘no’ manner. They will not provide accurate pH measurement, but will change from one colour to another at a set pH value, depending on the paper. These user friendly test papers are suitable for many industrial and educational applications.

    Whether it is for the determining the presence of strong oxidisers e.g. free chlorine, Johnson Test Papers offers litmus papers for the routine management of acid or alkaline reactions in industry.

    Products
    Image Product pH range Industry
    Image: Litmus Blue Paper Product: Litmus Blue Paper Graduation: pH < 7 red /> blue Industries: Education Industrial
    Image: Litmus Neutral Paper Product: Litmus Neutral Paper Graduation: pH < 7 red / > 7 blue Industries: Education Industrial
    Image: Litmus Red Paper Product: Litmus Red Paper Graduation: pH < 7 red/ > 7 blue Industries: Education Industrial
    Image: Congo Red Paper Product: Congo Red Paper Graduation: pH < 3 blue-violet / pH > 5 red-orange Industries: Education Industrial
    Image: Turmeric Paper Product: Turmeric Paper Graduation: pH < 6,8 yellow / pH > 8.6 red Industries: Education Industrial
    Image: Clayton Yellow Paper Product: Clayton Yellow Paper Graduation: pH < 12.0 yellow / pH > 13.0 red Industries: Education Industrial
    Image: Brilliant Yellow Paper Product: Brilliant Yellow Paper Graduation: pH < 6.6 yellow / pH > 8.4 red Industries: Industrial
    Image: Phenolphthalein Paper Product: Phenolphthalein Paper Graduation: pH < 8.4 white / pH > 9.6 red Industries: Industrial Food Service Homebrew
    Image: Methyl Orange Paper Product: Methyl Orange Paper Graduation: pH < 3.0 red/ pH > 4.4 yellow Industries: Industrial