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    pHYDRION Insta-Chek pH Refill

    $3.64
    Refill test strip paper for ME-193

    pHYDRION Insta-Chek pH Testing Kit

    $12.05 $16.10
    14 colors with 1 paper for 14 pH values. A double roll dispenser containing two 15' rolls and two color charts, one dip determines any pH from 0.0-13.0.