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TEST KIT REFILLS
- Handy refills of the testing agents for our testing kits.
- Available in .5-ounce size refills for our Three-Way Test Kit; OTO and Phenol Red solutions
- Please note: These refills are not calculated to work with our Mobile Water Test Kit and App for smartphone. Get info on Mobile Water Test Kit and App. [Links to TR1 water tester app landing page]