Integrated protection against lyctid beetle infestations. V. Selecting efficient schedules for pressure treatment of tropical hardwood lumber with polyborates
1988
Barnes, H.M. | Williams, L.H.
This research investigated pressure and nonpressure methods for treating imported hardwoods with polyborates. A series of studies was designed to determine the most efficient schedules for use with imported hardwoods. Effective treatment was obtained with both a Lowry treatment cycle and a simple vacuum process. Treatability varied depending on the species treated. Banak was much easier to treat than was obeche. Better penetration and retention were obtained with a disodium octaborate (TimBor) compared to an ammonium pentaborate/sodium sulfate solution (AmBor-S). Selective absorption from polyborate working solutions did not occur when solutions were reused for treating repetitive charges. The use of a final vacuum in the Lowry process removed approximately 5 pcf of water (about 20% moisture content) from treated stock.
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