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  • GS1 pH pen product highlights
    GS1 pH pen
    €136,95 - €136,95
    €136,95
    €136,95 - €136,95
    €136,95

    GroStar GS1 pH Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate pH. Premium probe technol...

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    €136,95 - €136,95
    €136,95
    €136,95 - €136,95
    €136,95
  • GS3 ec pen product highlights and description
    GS3 ec pen
    €136,95 - €136,95
    €136,95
    €136,95 - €136,95
    €136,95

    GroStar GS3 EC Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate water EC, PPM (500), PPM ...

    View full details
    €136,95 - €136,95
    €136,95
    €136,95 - €136,95
    €136,95

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