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  1. VALUE PACKS! pH BUFFER, EC CF STANDARD, METER-STORE pH4 pH7 250ml Hydroponics

    PH and EC Liquids. It also cleans the probe from any contaminants that may affect the readings. Then insert your probe into the foam and cap it. These solutions are made with high-quality ingredients to ensure accuracy and stability.

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  2. 30pcs/lot PH Buffer Powder Measure Calibration Solution ph4.00/ 6.86 /9.18 Calibration Point for PH Meter 40% Off

    30pcs/lot PH Buffer Powder Measure Calibration Solution ph4.00/ 6.86 /9.18 Calibration Point for PH Meter 40% Off

    Aliexpress UK

  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. PH Meter Calibration Solution 50ML Professional 4.0 7.0 10.0 PH Pens Calibration Solution 30 ML Probe Protection Liquids

    PH Meter Calibration Solution 50ML Professional 4.0 7.0 10.0 PH Pens Calibration Solution 30 ML Probe Protection Liquids

    Aliexpress UK

  5. Vitalink Essentials PH EC Buffer 4 7 Calibration Fluid CF Solution Hydroponics

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  6. PH&ORP calibration powder buffer powder 25ml 84us/cm 1413us/cm 12.88ms/cm 35PPT 1382 TDS calibration solution for EC TDS tester

    PH&ORP calibration powder buffer powder 25ml 84us/cm 1413us/cm 12.88ms/cm 35PPT 1382 TDS calibration solution for EC TDS tester

    Aliexpress UK

  7. pH Buffer 4.01, 7.0, 10.0 Calibration Fluid suitable for Hydroponics 250ml - 5L

    pH Calibration Buffers Colour Coded pH 4.01 (Red), pH 7.0 (Yellow) pH 10.0 (Blue) Pack Sizes: 250ml, 500ml, 1L, 5L Simply select your required pH Value and Pack Size from drop down pH Buffers used for calibrating pH meters need to be a known value of a certain pH, our buffers (manufactured in Manchester) are tested to a pH accuracy of 0.01 pH. - - Colour Coded for ease of identification and two values are required in a TWO point calibration process, pH 4.01 (Red) and pH 7.0 (Yellow). - - pH 10.01 is used in a Three Point calibration or as an alternative to 4.01/7.0 in a two point calibration. - - When calibrating it is advisable to only use a small amount (50ml) of each buffer in two separate containers, calibrate the meter and discard buffers same day to prevent.

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  8. YIERYI PH Calibration Solution 50ML 4.0 7.0 10.0ph Calibration Liquid for Ph Meter 30 ML Probe Protection Liquids

    YIERYI PH Calibration Solution 50ML 4.0 7.0 10.0ph Calibration Liquid for Ph Meter 30 ML Probe Protection Liquids

    Aliexpress UK

  9. PH CALIBRATION BUFFER POWDER, 4.01 6.86 9.18, PROBE, TESTER, SOLUTION AQUARIUM

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  10. Soil Test Kit Function 4 in 1 Reagent Set PH Nitrogen P K Soil Detector Soil PH Test Liquid Solution For Agriculture Gardening

    Soil Test Kit Function 4 in 1 Reagent Set PH Nitrogen P K Soil Detector Soil PH Test Liquid Solution For Agriculture Gardening

    Aliexpress UK

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

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  12. 4 in 1 Soil Test Solution Kit PH kalium Phosphorus Nitrogen Measuring Soil Test Liquid Kit for Agriculture Gardening Test

    4 in 1 Soil Test Solution Kit PH kalium Phosphorus Nitrogen Measuring Soil Test Liquid Kit for Agriculture Gardening Test

    Aliexpress UK

  13. PH Calibration Solution PH Calibration Buffer Solution 50ml PH4.00/PH7.00/PH10.0

    PH value: PH4.00/PH7.00/PH10.01. Capacity: 50ml. Cleaning's a breeze. PH accuracy: ±0.01.

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  14. pH Buffer 4.01 and 7.0 for Two Point pH Meter Calibration 250ml - 5L *Free P&P*

    pH Calibration Buffers Kit Colour Coded Essential Buffers for Two Point Calibration of pH Meters pH 4.01 (Red), pH 7.0 (Yellow) Simply select your required pH Value and Bottle Size from drop down - Product Code: PHCB - Various pH - Pack Size: 250ml, 500ml, 1L, 5L Description Highly accurate pH Buffer solutions for calibration of pH meters. pH Buffers used for calibrating pH meters need to be a known value of a certain pH, our buffers (manufactured in Manchester) are tested to a pH accuracy of 0.01 pH.

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