Elettrodi pH

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€68,00 + iva €78,00
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€67,00 + iva €76,00
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€66,00 + iva €75,00
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€63,00 + iva €72,00
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€60,00 + iva €69,00
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€53,00 + iva €60,00
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€51,00 + iva €58,00
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Il pH è il logaritmo negativo della concentrazione degli ioni H+ in una soluzione. La scala del pH è compresa tra 0 e 14: fino a 7 l’ambiente è acido, da 7 a 14 l’ambiente è basico. Il sistema per la misura del pH è composto da un indicatore con display digitale, un sensore di pH (elettrodo combinato) ed un cavo di collegamento per elettrodo.
L’ elettrodo di pH è un sensore con una membrana in vetro sensibile la cui funzione è quella di trasformare in un segnale elettrico proporzionale la concentrazione nella soluzione in esame degli ioni H+. Il segnale elettrico tramite un pHmetro viene trasformato in unità di pH. 

Gli elettrodi pH combinati moderni hanno al loro interno sia l’elettrodo di riferimento, un filo d’argento ricoperto di cloruro d’argento immerso in un elettrolita liquido o semisolido, che l’elettrodo ph di misura con una membrana in vetro sensibile alla attività dello ione H+.Non esiste un elettrodo di ph universale, ma esistono diversi elettrodi specifici per ogni applicazione. La scelta dell’elettrodo giusto determina la qualità della misura del pH. La misura del pH è importante in tutti i settori dell’industria alimentare, farmaceutica, cosmetica e galvanica.