Test Procedures - Certified Abrasives

This page last reviewed December 13, 2010

Test Procedures

In order to be certified, the abrasive must contain not more than one percent, by weight, materials passing a #70 U.S. Standard sieve before blasting. After blasting, the abrasive must contain not more than 1.8 percent, by weight, material 5 microns or smaller. The producer or manufacturer of an abrasive which fails the sieve test may choose to demonstrate that the abrasive meets a 20 percent opacity emission limit when blasted. The after-blast criteria must be met in either case. A copy of the full set of regulations and a flow chart of the certification process are enclosed. Tests and performance standards are identified below in Title 17 California Code of Regulations section 92530.

  • 92530. Certified Abrasives (PDF)

You will be billed for the actual cost of the testing and disposal/return. This varies, but is expected to be between $1,800 and $2,400 per sample plus disposal/return costs. An invoice for the cost of the test will be sent to you after the disposal/return of the product. Your results will be sent to you upon payment of the invoice. Non-payment of the invoice will result in decertification. Certification is effective for no more than 2 years.

For more information on the Abrasive Blasting Certification Program, please contact Kathryn Gugeler at (916) 322-0221.


  • Regulations (PDF)
  • Testing Process Flow Chart (PDF)
  • California Abrasive Certification Test Method 371-A (PDF)
  • Alternative Visible Emissions Test Method (PDF)