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  • Sentinel X100 Corrosion Inhibitor (Quart) Product Image
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    Sentinel X100 Corrosion Inhibitor (Quart) X100-QT Sentinel X100 Corrosion Inhibitor (Quart)
    SKU: X100-QT
    Brand: Sentinel
    (4)
    $24.14 each
    95
    Wed, Dec 9
    95
    QtyArrives
    95 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • X100 Quick Test Kit Product Image
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    X100 Quick Test Kit X100-QUICKTEST X100 Quick Test Kit
    SKU: X100-QUICKTEST
    Brand: Sentinel
    (1)
    $9.11 each
    75
    Wed, Dec 9
    75
    QtyArrives
    75 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel X400 System Restorer (Quart) Product Image
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    Sentinel X400 System Restorer (Quart) X400-QT Sentinel X400 System Restorer (Quart)
    SKU: X400-QT
    Brand: Sentinel
    (5)
    $23.95 each
    36
    Wed, Dec 9
    36
    QtyArrives
    36 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel X100 Corrosion Inhibitor (Gallon) Product Image
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    Sentinel X100 Corrosion Inhibitor (Gallon) X100-1GL Sentinel X100 Corrosion Inhibitor (Gallon)
    SKU: X100-1GL
    Brand: Sentinel
    (1)
    $86.95 each
    Fri, Dec 18 – Wed, Dec 23
    Arrives
    Fri, Dec 18 – Wed, Dec 23
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • Sentinel X300 New System Cleaner (Quart) Product Image
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    Sentinel X300 New System Cleaner (Quart) X300-QT Sentinel X300 New System Cleaner (Quart)
    SKU: X300-QT
    Brand: Sentinel
    $23.96 each
    41
    Wed, Dec 9
    41
    QtyArrives
    41 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel X200 Noise Reducer (Quart) Product Image
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    Sentinel X200 Noise Reducer (Quart) X200-QT Sentinel X200 Noise Reducer (Quart)
    SKU: X200-QT
    Brand: Sentinel
    (4)
    $21.15 each
    11
    Wed, Dec 9
    11
    QtyArrives
    11 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel X400 System Restorer (Gallon) Product Image
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    Sentinel X400 System Restorer (Gallon) X400-1GL Sentinel X400 System Restorer (Gallon)
    SKU: X400-1GL
    Brand: Sentinel
    (1)
    $84.95 each
    20
    Wed, Dec 9
    20
    QtyArrives
    20 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel X200 Noise Reducer (Gallon) Product Image
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    Sentinel X200 Noise Reducer (Gallon) X200-1GL Sentinel X200 Noise Reducer (Gallon)
    SKU: X200-1GL
    Brand: Sentinel
    $65.23 each
    Fri, Dec 18 – Wed, Dec 23
    Arrives
    Fri, Dec 18 – Wed, Dec 23
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • Sentinel X300 New System Cleaner (Gallon) Product Image
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    Sentinel X300 New System Cleaner (Gallon) X300-1GL Sentinel X300 New System Cleaner (Gallon)
    SKU: X300-1GL
    Brand: Sentinel
    $91.96 each
    6
    Wed, Dec 9
    6
    QtyArrives
    6 Wed, Dec 9
    Questions? Call 1-888-757-4774
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  • Sentinel offers water treatment products and services that provide the best lifetime protection for heating and hot water systems. Originally launched in the UK by Grace Dearborn in 1988 and subsequently a subsidiary of the leading multinational General Electric, Sentinel has operated independently since 2005, expanding its international reach and range of innovative solutions.

Happy Thanksgiving!

888-757-4774
Special Hours
Our Customer Support is closed today in honor of Thanksgiving. We will be back on Monday to answer your questions. Have a nice holiday!
Closed Now: Phone Hours
Monday – Thursday
8am–7:45pm ET
Friday
9am–7:45pm ET
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