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12-pack pH Meter Buffer Solution Powder For Precise, Accurate pH Calibration by Standard Packets - 4.01, 6.86, 9.18

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Price: $8.99
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  • KDKD Powder buffer solution provide long shelf life and stability and are ideal for low volume use.
    Each pack makes 250mL of buffer solution.
    It provides indefinite or long shelf life and stability, ideal for low volume use.
    It's lightweight, inexpensive and takes up very little space.

    Specification and Package including
    Each Pack Volume: 250 ml.
    Each powder packet/sachet makes 250ml of solution (when mixed with distilled or deionized water)
    Accuracy: ±0.01pH at 77°F(25°C)
    Size: 7.5x6.5cm/2.95x2.56"
    4 packets of 4.01 Solution (Potassium Hydrogen Phthalate).
    4 packets of 6.86 Solution (Mixed phosphate).
    4 packets of 9.18 Solution (Borax).
    1 Easy user manual.

    Step to use:
    Step 1: Open the packet pour the powder into a cleaning dry glass container.
    Step 2: Add 250ml deionized water (or distilled water) to the container.()
    Step 3: Stir until the powder has completely dissolved.
    Step 4: Calibrate your pH meter.(clean the meter by pure water before test)

    Note:
    1. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
    2. To ensure more accurate , calibrate by 2 solution, start at 6.86, then 4.01 or 9.18.
    3. Container should be glass or ceramic, don’t use metal material.
    4. you can store the calibration liquid in covered jars or containers for 2-3 weeks.


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