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Manual SDI15 Analyzer

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    Buy cheap Manual SDI15 Analyzer from wholesalers
    • Buy cheap Manual SDI15 Analyzer from wholesalers

    Manual SDI15 Analyzer

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    Brand Name : JUGE
    Model Number : AG-SDI47
    Certification : IOS9001, CE
    Price : USD2000-7000
    Payment Terms : Online order,T/T
    Supply Ability : 100 Unit/Week
    Delivery Time : 5-8 working days
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    Manual SDI15 Analyzer

    Manual SDI15 Analyzer


    >>Features


    ① ‌Lightweight and low-cost‌, yet durable and long-lasting
    ② ‌Stainless steel composite filter‌ offers high flow rate and maintains shape under pressure
    ③ ‌Built-in air vent valve‌ eliminates the need for manual adjustment
    ④ ‌Quick-connect fittings‌ on all joints for easy assembly and disassembly
    ⑤ ‌High-quality filter membrane‌ ensures accurate and reliable testing
    ⑥ ‌Complies with ASTM D4189-23 standard


    >>Technical Parameter

    Technical Parameters

    Sample Conditions

    • Pressure: 207 kPa
    • Temperature: 5–45°C
    • Min. Flow Rate: 1.0 L/min (1000 mL/min)

    Measurement Range

    0.2–6.67 (SDI15)

    Accuracy

    ±0.2 (SDI15)

    Sample Vessel

    500 mL

    Membrane Specifications

    • φ47 mm, 0.45 μm pore size
    • Mixed Cellulose Ester (MCE) membrane


    >>Technical Parameter

    SDI is a measurement of the pollution level determined by the amount of flow through a 47mm, 0.45um microporous filter membrane in a filter holder over 15 minutes, while maintaining a constant feed water pressure of 30 psi into the filter. Flow rates are measured at the start of the test (t=0) and at 5, 10, and 15 minutes. The maximum possible SDI 5 value is equivalent to 100% divided by 5 minutes (or 20 SDI units per minute of plugging percentage). The maximum possible SDI 10 value is equivalent to 100% divided by 10 minutes (or 10 SDI units). The maximum possible SDI 15 value is equivalent to 100% divided by 15 minutes (or 6.7 SDI units).‌

    ‌If 100% plugging occurs during the 15-minute test:‌ Stop the test and calculate as follows.
    (100% plugging is defined as the continuous water stream breaking into drops)
    SDI = 100 / T
    Where T is the time (in minutes) from the start of the test until 100% plugging occurs.
    Example: 100% plugging occurs at 4 minutes using a 0.45um membrane.
    SDI = 100 / 4 = 25.0

    ‌If 100% plugging does NOT occur by 15 minutes:‌ Calculate using the following formula:
    t = 0 min --> t₀ (s) = Time (seconds) to collect 500ml of filtrate at 30 psi pressure
    t = a min --> tₐ (s) = Time (seconds) to collect 500ml of filtrate at 30 psi pressure after a minutes of testing
    SDI=(100/(a-0))*((tₐ-t₀)/tₐ)

    ‌SDI 15 Value (Theoretical Maximum)‌ ‌Ranges:‌

    Ultra-Filtered Water: SDI < 0.1

    Filtered Water: 0.5 < SDI < 3

    Waste Water: SDI > 5
    At this point, calculating SDI over 10 or even 15 minutes becomes meaningful.

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