Very small amount of soap

This soap dispenser is made with sturdy plastic, a huge size, and has a nice green light indicator, BUT the amount of soap dispensed is not nearly enough for anything useful. The amount isn't adjustable which is listed right in the description, but I assumed 1ml would be a little more than this. The seller was quick to respond to my concerns and even shipped out a second unit in case it was defective, but both units dispense the same amount of soap even with fresh batteries. Maybe it'd work better with diluted or more liquidy soap, but its current design does not fit my needs.