The Deep Blue Pro 6-Way Test Strips are designed for pool owners who want to test for multiple water parameters. These strips offer a quick and easy method to test swimming pool water, covering free chlorine, total bromine, pH, total alkalinity, calcium hardness, and cyanuric acetic. To use, simply dip the strip in the water and remove it immediately. Hold it horizontally for 10 seconds, without shaking off excess water, then compare the colored pads to the chart on the test strip bottle. In instances of low stock, an alternative premium brand such as Blue Horizons, Deep Blue Pro, Relax, or Swim Fresh may be shipped to ensure prompt delivery. These brands are well-established in the water treatment industry.