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  1. pH Buffer Solution - Milwaukee pH 4.01 25pk

    Ideal for infrequent or field use. Sealed against light and air. QUICK CONNECTIONS. AUSSIE WARRANTY.

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  2. pH Buffer 4 PH 300ml Growth Technology Calibration Fluid

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  3. pH Buffer 4.01 Calibration Fluid suitable for Hydroponics 1L *Free P&P*

    pH Calibration Buffer Colour Coded pH 4.01(Red) - Product Code: PHCB4-E - Pack Size: 1 x 1L Description Highly accurate pH Buffer solutions for calibration of pH meters.

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  4. Growth Technology pH Buffer 4 1L Calibrating Meters

    This just gives more reliability. The Growth Technology pH buffer solutions are each of a known and fixed pH ?. 4 and 7 respectively.

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  5. Growth Technology pH Buffer 4 And Buffer 7 pH Meter Calibration Fluid 300ml

    This pH calibration solution from Growth Technology is perfect for all your hydroponic needs. With a 300ml bottle of Buffer 4 and Buffer 7 pH Meter Calibration Fluid, this liquid is ready for use straight out of the box. Made with mineral material basis, this pH solution is compatible with all plants. This product is a must-have for any hydroponic setup, and with its high-quality performance, it is sure to provide the perfect pH balance for your plants.

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  6. 3-Pack pH Buffer 4 & 7 EC Standard Calibration Solutions 250ml Hydroponic Meters

    Looking for more?Quality garden, aquatic and hydroponic products for you to add to your basket. pH Buffer 4 + pH Buffer 7 + EC Standard.

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  7. pH Buffer 4 Calibration Fluid suitable for Hydroponics 250ml **Free P&P**

    pH Calibration Buffer Colour Coded pH 4.01(Red) - Product Code: PHCB7-C-PP - Pack Size: 1 x 250ml Description Highly accurate pH Buffer solutions for calibration of pH meters.

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  8. Essentials LAB Buffer 4 - ideal solution for calibrating pH meters at pH4. 250ml

    Highly accurate pH4 solution. Acidity level: pH4. Shake the bottle before use. Always pour a small amount into another container to test pH, and do not place your pH probe directly into the bottle. This will avoid contamination of the Buffer 4 in the bottle and will maintain its accuracy.

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