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Ditmer Trading & Consulting BV

Professional Services & Supplies

Wet enamel preparation & milling

Prior to the actual application, porcelain enamel slip need to be prepared in accordance with the application requirements, such as fineness, set and specific gravity.

The traditional wet enamel preparation process ("milling") consists of the following seven sequential steps :

  1. weighting of various frits & additions in accordance with the milling formulation
  2. loading ball mills
  3. adding water
  4. wet milling
  5. discharging ball mills
  6. sieving & magnetic screening of slip
  7. storage

Below some pictures of various enamel preparation equipment, such as ball mills, sieves, storage and discharge tanks.



Nowadays there are also so-called ready-to-use and ready-to-mix enamels available.

These enamels are already weighted & mixed in the appropriated quantities.

Ready-to-use enamels are supplied complete with water, so those enamels can in theory be used immediately. Ready-to-mix enamels require just adding water & mixing prior to use.

The benefits of RTU / RTM enamels are :

  • Lower capital investment for milling equipment
  • Less change for formulation mistakes


Related links

Enamel preparation equipment

Enamel slip testing

Enamel literature

Useful calculations

About Us

Ditmer Trading & Consulting BV is a family owned company, which was founded by Ronald Ditmer in 2007.

We are specialized in providing worldwide professional services & supplies to the porcelain (vitreous) enameling & powdercoating industry.

Contact details

Ditmer Trading & Consulting BV
Palissander 141
3315MP Dordrecht
The Netherlands

Phone : +31-(0)78-6169877
e-mail :

for further information and/or assistance


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Palissander 141, 3315 MP Dordrecht, The Netherlands | e-mail: | Phone : +31-786169877 | WhatsApp : +31-638-508743