NPR System Lead-Free Container Glass Enamels

The NPR System is Ferro's lead-free color range for the decoration of glass tumblers and tableware.


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Ferro offers the NPR System of lead-free container glass enamels formulated for most chemical compositions used in the production of soda-lime glass tumblers and tableware.

Intermixable Colors for Limitless Possibilities
NPR container glass enamels are also intermixable, which allows decorators to mix and match their own shades for optimal productivity with minimal inventory. It is recommended to perform preliminary tests before launching production with color mixtures from this system, especially for combinations of red or yellow cadmium-containing colors (as marked *) with any other colors.  

NPR System container glass enamels are suitable for tempering cycles, however additional testing is recommended.

Our container glass enamels from all systems can be provided in the following forms:
  • Powder form
  • Water-friendly pastes for conventional and electrostatic spraying
  • Oil-based liquid pastes for cold screen-printing
  • Thermoplastic pastes for multi-color hot screen printing
  • Mediums suitable for all applications can also be provided

Colors in the NPR System do not contain voluntary additions of heavy metals that include lead, cadmium, mercury and hexavalent chromium (Cr6+), with the exceptions of the cadmium-containing green, yellow and reds (as marked * below). These colors use cadmium pigments in order to achieve any applicable market-required color tones.   

NPR System enamels contain lithium, therefore it is not recommended to use these enamels for the decoration of pressurized containers.


GREEN NPR 1820 7714 C
GREEN NPR 1821 * 3425 C
BLUE NPR 2822 301 C 
BLUE NPR 2824 293 C 
BLUE NPR 2826 7687 C 
YELLOW NPR 3820 * 108 C
YELLOW NPR 3822 130 C 
YELLOW NPR 3823 114 C
RED  NPR 7820 * 485 C
RED  NPR 7822 * 202 C 
WHITE  NPR 9820  
BLACK NPR 4820  
FLUX  NPR 820  
ETCH  NPR 9822  

  • The Pantone references and color prints are provided as an indication of the shade only.
  • The above-mentioned references are randomly selected color shades, please contact your respective Ferro Technical Service representative to get more information on further available colors. 
  • The above-mentioned references refer to the powder form only. If a thermoplastic paste, liquid paste or spraying form is being requested, please also indicate the medium.

Additional colors to our standard color range are also available on demand.
Please use the product inquiry form to request complete custom color matching from our technical service team.

Ferro provides complete custom color matching services to help our customers develop new color shades.
Color Mixing
We offer custom color mixing services which gives our customers total flexibility in tailoring color matches on-site, as well as applicable gloss and finish.  We also provide testing to ensure the firing stability of mixed shades, mixing guidelines and recommendations for Pantone color matching.


Color Matching
Ferro provides complete custom color matching services to help our customers develop new colors and finishes to meet specific industry standards and/or unique customer needs.  In addition to matching colors, Ferro can provide formulas to customers using the base/tint system.

Precise color matching can be achieved using our internal extensive database and color matching expertise.  All colors are matched to defined reference samples to ensure exact match and consistent color reproduction from batch to batch.