Passivation Specification News

QQ-P-35c and ASTM A-967AMS 2700USDA Approval


QQ-P-35c has been canceled!

The order has gone out to cancel QQ-P-35c in favor of the ASTM Specification A-967. The ASTM Specification allows you to do your stainless steel passivation with state of the art CitriSurf citric acid passivation technology that is safe and environmentally friendly. You are no longer required to use QQ-P-35c and nitric acid for your passivation!!

The materials in this site tell the story. If you are interested in saving time and money, while you improve safety and environmental hazards, take a minute to look at this material.

You can order A-967 from ASTM by phone at (610) 832-9634. It is also available from ASTM's A-967 web page.

Samples are available for your testing.

If you are a current customer that is looking to expand your business in the areas covered by the old QQ-P-35c, you should be contacting your customers now to inform them of this important development. Contact your local distributor or Stellar Solutions for more information, details on the ASTM Specification, or samples for your tests.


AMS 2700 has been released!

The SAE aerospace specification AMS 2700 is now available. Like ASTM A-967 did for other industries, the new AMS specification allows the use of citric acid passivation in the aerospace industry. It can be used as an alternative to AMS QQ-P-35. AMS 2700 is available from the SAE webpage.


USDA Approval has been discontinued!

The USDA Food Safety and Inspection Service has eliminated the requirement for prior approval of nonfood compounds for use in food processing plants. They now only require the product to be safe and effective under the conditions of use. This allows our CitriSurf products to be used in food processing plants, saving money and improving safety. The USDA documentation on the requirement change can be found at their website.



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