Alkaline Copper Quaternary (also known as ACQ) is a water based wood preservative method recently introduced in countries where there is a demand for alternatives to CCA.
•
ACQ has come into wide use in the USA, Canada, Europe, Japan and Australia following restrictions on following restrictions on CCA, as ACQ is seen as a "greener" preservative and a more sustainable option.
copper | Copper | Alkaline Trio | Quaternary | Copper Canyon Press | Copper Mountain (Colorado) | Copper Canyon | Svensson's Copper Underwing | Copper Scroll | Copper River and Northwestern Railway | Anaconda Copper | The Adventure of the Copper Beeches | Revere Copper Company | Quaternary numeral system | Quaternary glaciation | Large Copper | Copper Kings | Copper extraction techniques | copper beech | Calcium copper titanate | Boston and Montana Consolidated Copper and Silver Mining Company | Ashio Copper Mine | Zangezur Copper and Molybdenum Combine | Schuyler Copper Mine | Rosemont Copper | Quaternary (EP) | "quaternary" | Oxygen-free copper | large copper | Indian copper plate inscriptions |