... Cold water to be cleaned, or directly to join the cold water to fit dyeing bath ratio. 3) ... plus acid neutralization, the pH controlled at 6-8, temperature is below 50°C, ... that can be used to detect MERCK). 6) Continue in the same bath in dyeing process. Compatibility: ... barrel) Storage: Low temperature (4) for 6 months to maintain the original activity, normal temperature (25°C) keep ...