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If black dot is still visible with the stick resting on the bottom of the test tube
Includes O-Ring: Comes with a secure sealing O-ring to prevent leaks and ensure proper fit
Each bottle includes 50 strips
certified to apsp ansi icc-16 2017 drain standards
On the underside of the top access panel
Taylor 7-Way Test Strips | 50 Strips | S-1403 Amerlite Universal Large Pool Light Adapter Ring If black dot is stillTaylor S 1403 7 Way Test Strips are designed to make pool and spa water testing quick, accurate, and convenient. These strips analyze seven parametersfree chlorine, total chlorine, bromine, pH, total alkalinity, total hardness, and cyanuric acidto ensure balanced water chemistry. With instant color matching results, they provide fast feedback for adjusting chemicals before problems develop. Each bottle includes 50 strips, making them a practical
