Several biocidal formulations were tested under laboratory conditions in order to discover an alternative antisapstain chemical to chlorophenoxides. The formulations tested were experimental water solutions containing a quaternary ammonium chloride, a commercial fungicide and/or a sodium salt of some carboxylic acids. The effect of sodium carbonate and borax decahydrate in mixture with a quaternary compound was also examined. The best cost-effectiveness was obtained with trimethylcocoammoniumchloride in combination with a sodium salt of a branched-chain aliphatic acid. This finding was later confirmed in pilot and mill scale tests.

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