Can you tell me what is the correct temperature for measurement the pH when dyeing with reactive dye?

Name: Miguel

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pHydrion Mikro
pH Test Paper
0 - 13.0 pH

Country or region: Peru

Message: Please, can you tell me what is the correct temperature for measurement the pH when dyeing with reactive dye? For example, with a dye similar to Cibacron (Sunfron), we need to measure pH after the addition of caustic soda to 60 C, in this point the pH will be 11.2. This because the pH is in inverse relation with temperature. Thank you. 

Unless indicated otherwise, for any pH measurement, whenever possible, use the standard temperature of 25°C (77 °F). This is the same for reactive dyes as for other chemicals. You will need to cool the mixture of dye and sodium hydroxide down to 25 degrees in order to take the measurement.  

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