Abrasive Blasting - 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.
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.
- Testing Process Flow Chart
- California Abrasive Certification Test Method 371-A
- Alternative Visible Emissions Test Method