In this section, we will show you frequently asked questions about Hull Cell and answers to them. If you are unfamiliar with Hull Cell’s basic information, please see link below:

YAMAMOTO-MS

2020.03.20

What is Hull Cell Test?

https://www.yamamoto-ms.co.jp/en/what-is-hull-cell/

We have been selling Hull Cells, one of our most beloved items, for a longtime.In this section, we would like to introduce basic theory of Hull Cell and how to use it briefly.Hull Cell is a tank for test of plating, invented by Dr. R. O. Hull. By using trapezoidal shaped cell, it became possible to observe state of deposition under current density with continuous wide range. It also becomes easier to observe relationship between current density and state of deposition by changing plating cond...

Q. What kind of Hull Cell anodes and cathodes do you have?

A. We have not only copper and brass, which are widely used, but also other anodes and cathodes to match customers’ requirements. A table below is popular products, but there are other possible materials which can be produced as special order products. In that case, please contact us before your order.

List of Hull Cell anodes

List of Hull Cell cathodes

Q. Do you have anode bags for Hull Cell?

A. We used to have, but now they are discontinued. In Hull Cell test, you can use filtering paper as anode bag. Please refer to procedure below.

ex.) How to hold filtering paper (diameter: 125mm) as anode bag

Q. What does it mean, “If brass plate is used as cathode for chromium plating, contamination of chloride can be inspected”?

A. If chloride is contaminated into plating bath, back side of brass plate is etched. If the amount of chloride is much more, not only back side, but also low-current part of front side can be etched.

Q. Can I use iron test piece as a cathode for chromium Hull Cell test?

A. Yes you can. But we recommend using brass cathode plate or nickel-plated cathode plate for decorative chromium plating. In case of hard chromium plating, iron plate can be a cathode, but in that case the iron cathode often be used with relatively higher current density, so it seems that total current should also be set relatively higher in range of 10A to 30A. Additionally, chromium plating bath tends to raise its temperature intensely, so please be careful.

Q. Do you have nickel-plated cathodes?

A. No we do not. It is because plated nickel film makes oxide film easily, and it gives influence to plating test results. That is why we do not sell nickel-plated test pieces. We apologise for inconvenience, but please make nickel-plated test pieces just before examination on your own.

Q. I would like to perform strike nickel plating with Hull Cell. Which cell is the most suitable?

A. We recommend Hull Cell Long-type. Of course standard Hull Cell can do strike nickel plating, but in this plating method, covering power is the focused point. Hull Cell Long-type is suitable for checking covering power in detail, so we chose Long-type.

Q. Is there any industrial standard related with Hull Cell?

A. DIN, German industrial standard, describes Hull Cell. DIN50957-1 is for standard Hull Cell, and DIN50957-2 is for Hull Cell Long-type.

Q. Are you able to manufacture beryllium copper cathode plates for Hull Cell ?

A. Yes we are. For more detail, please contact us.

* “Hull Cell” is a trademark registration product of YAMAMOTO-MS Co., Ltd.
Trademark Registration No. 1294468 (Category 10 / laboratory instruments) / Trademark Registration No. 1278949 (Chapter 11 / Electricity)
Some (R) marks have been omitted from the text.