Get a complete snapshot of your water chemistry in one session with the Valterra Blue Devil 6-Way Pro OTO Test Kit B7550. This professional-caliber kit measures six critical parameters: chlorine, bromine, pH, alkalinity, hardness, and cyanuric acid, giving you everything needed to keep pool and spa water in peak condition. The OTO (orthotolidine) method delivers swift, accurate chlorine and bromine readings, while the intuitive color-comparison system makes interpreting every result straightforward. All components are housed in a rugged storage case, making this kit a reliable companion for anyone serious about water quality.

Key Benefits

• Full-Spectrum 6-Way Analysis: Covers chlorine, bromine, pH, alkalinity, hardness, and cyanuric acid in one convenient kit.
• Rapid OTO-Based Chlorine/Bromine Readings: Delivers fast, precise sanitizer measurements for confident water management.
• Intuitive Color Comparison: The visual matching system produces unmistakable results, even for first-time users.
• Rugged Carrying Case: Protects and organizes every component so your kit stays ready whenever you need it.
• Professional-Grade Water Management: Equips you with the data to maintain pristine, properly balanced water at all times.

Specifications

• Brand: Valterra
• Part Number: B7550

Installation & Operation Tips

• Fill the large test cell to line A with pool water.
• Add Cyanuric Acid test solution to line B, cap, and shake for 30 seconds.
• Wait 2–5 minutes, then pour into the C.A. view tube while looking down at the black dot.
• Stop pouring when the black dot disappears.
• Read the ppm level from the tube scale.
• Recommended Cyanuric Acid level: 30-70 ppm

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