Valterra Blue Devil 6-Way Pro OTO Pool & Spa Test Kit | B7550

Valterra Blue Devil 6-Way Pro OTO Pool & Spa Test Kit | B7550

Marsoni

M251S

$29.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Valterra Blue Devil 6-Way Pro OTO Pool & Spa Test Kit | B7550Get 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

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Good fit. Helps keep my vials sealed and sanitary. Clean before and during each use to prevent issues. The large caps are a great fit on 10ml water vials and the small caps are a great fit on 3ml research vials. The price was good, the variety of size and color are nice. Overall no complaints to report.

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Reviewed in the United States on February 21, 2026

Verified Purchase

Angela

Chelsea, US

★★★★★ 5

💯

Súper buenas y se puede lavar

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Reviewed in the United States on March 9, 2026