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For this trial tap water was replaced by distilled water. In addition, the lime was changed, looking for a better quality of the compound. No changes were made to the constructional design of the apparatus. (Again vague sentence about constructional design.)\The apparatus was kept the same as for the previous two trials.
Although the change in the brand of lime was not pre-decided for this particular trial, it would allow us to evaluate if the performance of the lime feeder changes on using a different lime brand. This change is important to study taking into account the fact that the operators would have to deal with a different brand(s) in the local Honduran markets.
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