Through the long-term tracing measurement of different metallurgical CRMs,it shows that metallurgical CRMs have a relevantly long-term stability under the required storage and usage conditions.

• 对各类冶金标准物质进行长期的跟踪试验表明 ,冶金标准物质只要在规定的储存、保管和使用条件下 ,具有比较长期的稳定性。