Waterproof Dissolved Oxygen Meter Pen

Marsoni

M251S

$177.00

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

Waterproof Dissolved Oxygen Meter PenMeasures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal wastewater, aquariums and fish hatcheries. Designed for simple one hand operation with automatic temperature compensation and calibration to air. The polarographic probe has a built in temperature sensor and easy to replace pop off probe heads. Simultaneously displays dissolved oxygen and temperature readings. Also holds readings and recalls

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Reviewed in the United States on June 20, 2025

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Lisa

New York, US

★★★★★ 5

Perfect size

Color: White, Size: 4 inch, Color: White, Size: 4 inch

These little shelves are perfect for my soap dispenser and lotion for my pedestal sink! The sink top was not large enough. Problem solved!

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Reviewed in the United States on April 29, 2026

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