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Ammonia as Nitrogen. ALS Environmental may or may not test for Ammonia as Nitrogen (CAS # 7664-41-7). Information is subject to change; please contact us for the latest available analytes for which we test.
A cylinder conforming to specification DOT 3A, 3A480X, or 4AA480 used exclusively for anhydrous ammonia, commercially free from corroding components, and protected externally by a suitable corrosion-resistant coating (such as paint) may be requalified every 10 years instead of every five years.