Análisis DIY

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How to Make Homemade pH Paper Test Strips

Recomendado particularmente el método 2 con col lombarda. Recommended specially red cabbage leaves method (method 2).It is possible to use coffe filters as papers strips.

pH table
Rojo intenso—————2
Rojos violaceos———-4
Rojos violeta—————6
Azul violaceo————-7
Azul verdoso—————9

(Here pH table as picture).