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Through our own proprietary processes, we have been able to produce gold nano particles that enable diagnostics and biosensors to be manufactured, which we supply using a high quality management system.

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  • Colloid solution in which nanosized gold particles are dispersed
  • Spherical gold particles with high-purity and a narrow particle size distribution
  • Easy to modify gold particle surfaces
  • Colloids can be supplied in the quantity and in the time required as they are manufactured in Japan
  • Colloids can be supplied at a stable level of quality with little variation between lots
15nm

15nm

30nm

30nm

40nm

40nm

50nm

50nm

80nm

80nm

100nm

100nm

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Gold-citric acid colloidal solution is used in in-vitro diagnostic and other test kits.
It is ideal for use in test reagents, biomarkers, X-ray identification markers, etc.

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Au colloid solution-SC
Particle size
(nm)
Solvent Color Shape Particle size range Gold content (Wt%) pH
5 Water Light orange

Dark red
Spherical shape 10% or less in relation to the particle size 0.004~0.005 4.5
15 0.006~0.007 5.5
20 5
30 4
40 3.5
50 3
60 3
80 3
100 3
150 3
Absorbance

Absorbance

Au particle size

Au particle size

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