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Testers provide a low cost quick and easy way to check pH in a convenient portable format wherever lab grade accuracy is not essential. Standard pH sensors are made of a glass tip that needs to stay moist and are commonly used for water and waste water and simple applications. ISFET advanced pH sensors are made of a silicon chip that is virtually unbreakable, is non clogging and can stay dry. Applications may vary from water to food and other difficult applications.

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