Australian standards glass beads are made of glass as raw materials, processed by special processes and high quality glass beads.

The use of reflective glass beads (AS drop on) standard glass beads has greatly improved the safety factor of road traffic, which plays an important role in road safety.

With micro glass beads refraction principle, in night car headlight beam is reflected back into their line of sight, which formed the marking shiny effect, these beads not only enhances the visibility of night road marking, and on the whole increased the service life of the marking.

The following is the relevant parameters of Australian standards.
 
Sieve size (μm)
 
 
Alternative NO.(mesh)
 
 
passing (%)
 
 
Remark
 
850 16 100 Content of heavy metal:
As, Sb, Pb: ≤50ppm;
Hg, CdO, Cr6+:≤10ppm
Or heavy metal content shall not exceed 200ppm
600 18 90-100
425 20 35-75
300 30 15-45
150 45 0-5
 

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