Buffer Solutions

Our Buffer Solutions Products are essential for calibrating pH meters and ensuring accurate water testing results. These solutions maintain a stable pH value, allowing your equipment to deliver precise readings every time. Ideal for laboratories, pools, aquariums, and industrial systems, our buffer solutions are easy to use and come in a variety of standard values—helping you keep your water testing reliable, consistent, and effortless.

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220 products

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Hanna Instruments HI-70440 Iodine stabilised solution, 0.02N, 1 Litre
Hanna Instruments
Hanna Instruments HI-70440 Iodine stabilised solution, 0.02N, 1 Litre Sale price£69.35 Regular price£73.00
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Hanna Instruments HI-70446 Fehling solution A, 500 mL
Hanna Instruments
Hanna Instruments HI-70446 Fehling solution A, 500 mL Sale price£43.13 Regular price£45.40
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Hanna Instruments HI-70441 Iodine stabilised Solution, 0.04N, 1 L
Hanna Instruments
Hanna Instruments HI-70441 Iodine stabilised Solution, 0.04N, 1 L Sale price£67.73 Regular price£71.30
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Hanna Instruments HI-70437 Potassium Iodide concentrated (30%) solution, 500 mL
Hanna Instruments
Hanna Instruments HI-70437 Potassium Iodide concentrated (30%) solution, 500 mL Sale price£125.30 Regular price£131.90
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Hanna Instruments HI-70433 Iodine Stabilised Solution, 0.01N, 1 Litre
Hanna Instruments
Hanna Instruments HI-70433 Iodine Stabilised Solution, 0.01N, 1 Litre Sale price£23.27 Regular price£24.50
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Hanna Instruments HI-70429 Silver Nitrate Solution 0.05M, 1L
Hanna Instruments
Hanna Instruments HI-70429 Silver Nitrate Solution 0.05M, 1L Sale price£115.90 Regular price£122.00
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Hanna Instruments HI-70404 Potassium Iodide Powder Packets, 100 Packets
Hanna Instruments
Hanna Instruments HI-70404 Potassium Iodide Powder Packets, 100 Packets Sale price£23.27 Regular price£24.50
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Hanna Instruments HI-70300P Storage solution sachets for pH and ORP electrodes, 25 x 20mL
Hanna Instruments
Hanna Instruments HI-70300P Storage solution sachets for pH and ORP electrodes, 25 x 20mL Sale price£44.55 Regular price£46.90
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Hanna Instruments HI-7023M TISAB Solution, 250 mL bottle
Hanna Instruments
Hanna Instruments HI-7023M TISAB Solution, 250 mL bottle Sale price£47.45 Regular price£49.95
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Hanna Instruments HI-7023/1L TISAB solution 1L (Fluoride)
Hanna Instruments
Hanna Instruments HI-7023/1L TISAB solution 1L (Fluoride) Sale price£115.33 Regular price£121.40
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Hanna Instruments HI-7021M ORP test solution, 240mV, 230 mL bottle
Hanna Instruments
Hanna Instruments HI-7021M ORP test solution, 240mV, 230 mL bottle Sale price£29.26 Regular price£30.80
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Hanna Instruments HI-7023L TISAB solution (for fluoride)
Hanna Instruments
Hanna Instruments HI-7023L TISAB solution (for fluoride) Sale price£61.94 Regular price£65.20
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Hanna Instruments HI-7021L ORP test solution, 240mV, 500 mL bottle
Hanna Instruments
Hanna Instruments HI-7021L ORP test solution, 240mV, 500 mL bottle Sale price£34.67 Regular price£36.50
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Hanna Instruments HI-7010C Purple Colour 10.01 pH (@25°C) Standard Calibration Solution, 500 mL bottle
Hanna Instruments
Hanna Instruments HI-7010C Purple Colour 10.01 pH (@25°C) Standard Calibration Solution, 500 mL bottle Sale price£31.73 Regular price£33.40
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Hanna Instruments HI-7022M ORP test solution, 470mV, 230 mL bottle
Hanna Instruments
Hanna Instruments HI-7022M ORP test solution, 470mV, 230 mL bottle Sale price£29.26 Regular price£30.80
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Hanna Instruments HI-7010/1G pH 10.01 Buffer Solution, 1 Gallon bottle
Hanna Instruments
Hanna Instruments HI-7010/1G pH 10.01 Buffer Solution, 1 Gallon bottle Sale price£91.11 Regular price£95.90
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Hanna Instruments HI-7010L/C pH 10.01 Buffer Solution, 500 mL bottle with Certificate of Analysis
Hanna Instruments
Hanna Instruments HI-7010L/C pH 10.01 Buffer Solution, 500 mL bottle with Certificate of Analysis Sale price£33.25 Regular price£35.00
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Hanna Instruments HI-7009/1L pH 9.18 Buffer Solution, 1L bottle
Hanna Instruments
Hanna Instruments HI-7009/1L pH 9.18 Buffer Solution, 1L bottle Sale price£31.73 Regular price£33.40
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Hanna Instruments HI-70082M pH 8.20 Buffer Solution, 230 mL bottle
Hanna Instruments
Hanna Instruments HI-70082M pH 8.20 Buffer Solution, 230 mL bottle Sale price£27.74 Regular price£29.20
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Hanna Instruments HI-7007/1G pH 7.01 Buffer Solution, 1 Gallon bottle
Hanna Instruments
Hanna Instruments HI-7007/1G pH 7.01 Buffer Solution, 1 Gallon bottle Sale price£65.83 Regular price£69.30
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Hanna Instruments HI-7009/1G pH 9.18 Buffer Solution, 1 Gallon bottle
Hanna Instruments
Hanna Instruments HI-7009/1G pH 9.18 Buffer Solution, 1 Gallon bottle Sale price£64.88 Regular price£68.30
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Hanna Instruments HI-7009M pH 9.18 Buffer Solution, 230 mL bottle
Hanna Instruments
Hanna Instruments HI-7009M pH 9.18 Buffer Solution, 230 mL bottle Sale price£30.78 Regular price£32.40
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Hanna Instruments HI-7006M pH 6.86 Buffer Solution, 230 mL bottle
Hanna Instruments
Hanna Instruments HI-7006M pH 6.86 Buffer Solution, 230 mL bottle Sale price£30.78 Regular price£32.40
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Hanna Instruments HI-7007L/C pH 7.01 Buffer Solution, 500 mL bottle & Certificate of Analysis
Hanna Instruments
Hanna Instruments HI-7007L/C pH 7.01 Buffer Solution, 500 mL bottle & Certificate of Analysis Sale price£33.25 Regular price£35.00

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