Looking for recommendations for domestic online pH meters
Thread Content
Under these operating conditions, after the surfactant is dissolved in water, the pH is around 11; it is necessary to add salts and acids to lower the pH to around 2, with the temperature at around 60 degrees. Please recommend durable domestic online pH meters; high precision is not required, but a long lifespan is essential.
Ever since I used a domestic pH meter once a few years ago, I’ve never dared to use one again; its accuracy is such that it would fluctuate even when placed in pure water
270483943@qq.com