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 Home > Ph & Nutrient Management > PH Buffer & calibration fluid >  
Essentials pH 4.01 buffer - 250mlEssentials pH 4.01 buffer - 250ml
Necessary to calibrate pH & EC/CF meters, for super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months.
£2.99
Essentials pH 4.01 buffer - 1 litreEssentials pH 4.01 buffer - 1 litre
Necessary to calibrate pH & EC/CF meters, for super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months.
£9.99
Essentials pH 7.01 buffer - 250mlEssentials pH 7.01 buffer - 250ml
For super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months. As well we offer pH electrode storage/refill & cleaning solutions.
£2.99
Essentials pH 7.01 buffer - 1 litreEssentials pH 7.01 buffer - 1 litre
For super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months. As well we offer pH electrode storage/refill & cleaning solutions.
£9.99
HM Digital Ph Buffer SolutionHM Digital Ph Buffer Solution
HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life.
£9.99

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