We produce the purest nanoparticles from various materials and synthesise them in freely selectable liquids. Our laser-based production method guarantees freedom from chemical impurities and electrostatically stabilizes the colloids on request, allowing exceptional particle stability over time.

Why to chose RHP nano-colloids?

  • Ultra-high purity
  • Broad choice of materials (elements, alloys, special stoichiometric compositions)
  • Spherical
  • In water or organic media
  • Selection of capping agents
  • Easy to functionalize
  • Long-term stability (>1 y)
  • Available in a wide concentration range (0.05-10 mg/ml)
  • Competitive price



  • 0.05 mg/ml  
  • 0.1 mg/ml
  • 0.5 mg/ml
  • 1 mg/ml
  • 2.5 mg/ml
  • 5 mg/ml
  • 10 mg/ml

Liquid carrier:



  • ultrapure water

  • citrate buffer

  • ethanol

  • acetone

  • other

  • Reactant-free - no additives!

  • sodium citrate

  • PVP

  • other

  • 20 ml

  • 50 ml

  • 100 ml

  • 250 ml

  • 500 ml

  • 1000 ml

In addition to the nanoparticle colloids in the catalogue, we offer to explore other materials, including alloys (e.g. Au/Pt ), ceramics (e.g. Al2O3), non-stoichiometric compounds and exotic materials according to your needs.

Upon request, we can also produce stabilized or functionalized nanoparticles with specific ligands of your choice.


Gold Nanoparticles

Gold Nanoparticle Colloids

Ultrapure Nano Powders

Purest nanoparticles from various materials and disperse them in freely selectable liquids during …


Water-based ultra-pure nano-inks for inkjet and aerosol printing


Nano-functionalized polymer and ceramic materials with improved properties