pH measurement in biological materials - Metrohm Ltd. (Switzerland)

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I have problems measuring the pH of blood. Can you help? My electrode only works for a short time. What can I do? My sample volume is small, what do you recommend? Biological samples often contain protein. The normal electrolyte used in pH measurements is KCl; however KCl denatures proteins. Use Idrolyte as the electrolyte in measurements of biological samples and make your measurements trouble free. Clean, refurbish your electrodes by immersion in 5% pepsin in 0.1 mol/L hydrochloric acid for several hours. According to pHil the frog your electrodes will perform like new!
	Small sample volumes The ideal system for routine measurements in biological samples is the Metrohm 827 pH lab with the Metrosensor Biotrode!
	Small volumes, flat samples When things are flat the 827 pH lab plus the Metrosensor LL combined flat membrane pH electrode are first choice.
	When high precision is required When accuracy is most important then the optimum combination is the Metrohm 780 pH Meter plus the Metrosensor Biotrode.