• Tests for: 2 important chemistries, Total & Free Chlorine, so you know when to shock.
  • ShockChek™ is the fast, easy way to determine if you need to shock (or super chlorinate) your pool or spa.
  • Just dip a strip and compare to color chart which indicates a simple “Shock” or “Okay” result.
  • Shocking is a necessary maintenance step that keeps the water clear of harmful contaminants that can cause irritation and spread water-borne illnesses.

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Item No. 3010040028
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