Seven chemical formulations were tested as antisapstain treatments for freshly sawn radiata pine sapwood (90x50 mm²). Each formulation was used with and without a water-repellent additive and was sprayed on to 1 m long boards. The boards were then stacked into "mini" packets and stored unprotected from the weather for 6 months. Haipen 50w (at 0.2 or 0.4% active) and NaPCP (1% active) plus 1.5% borax were the most effective formulations. The wax water repellent (1% Paracol 800A) did not appear to enhance the performance of any treatment, and with some treatments adversely affected fungicidal effectiveness. This requires further investigation.

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