When using electroless nickel concentrate, how can the pH value of the bath solution be scientifically tested? Why is it that improper pH value control is prone to production failures?
Electroless nickel plating plants generally measure the pH value of the plating solution through two methods: pH meters and pH test paper. It should be noted that the readings of some pH test papers may differ from those of pH meters by as much as 0.5.
In some electroless plating processes, the pH value reading may be inaccurate due to the salt ion effect in the bath solution. When the electroless nickel plating solution ages, the accumulation of ions such as NH+ and Cl- will cause changes in the ionic strength of the solution. As a result, the pH test paper reacts differently to the new bath solution from to the old plating bath.
In addition, pH test papers from different suppliers also have significant errors in the measurement results of the same bath solution. Therefore, Bigely, a manufacturer of nickel concentrate, suggests that using a pH meter for measurement is more accurate.
To obtain reliable measurement results, the pH meter must be calibrated. The common mistake that affects the measurement accuracy of pH meters is ignoring the influence of temperature on pH values. Firstly, it should be considered that the temperature of the calibration solution and the electroless nickel plating bath under test should be consistent. Secondly, attention should be paid to the use of temperature compensation.
About Bigely Technology
Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in the production of electroplating additives. As a famous electroplating additives source manufacturer in China, our products are widely used to meet the plating needs of different industries and exported to many countries from all over the world. They can meet the environmental protection standard after use, mainly used in automobile parts, sanitary ware, electronic products, hardware, furniture, building accessories and other fields.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
