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Engineering 9 Online
OpenStudy (anonymous):

please guys what is the PH of the heartwood variation

thomaster (thomaster):

The pH of heartwood is generally about 4.5 - 5.5 Source: Dinwoodie, J.M. (2000). Timber: Its Nature and Behaviour.

OpenStudy (anonymous):

thanx

thomaster (thomaster):

yw

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