It took a little while, but we finally had someone ask us if we knew of a place that sold products that a water filter salesperson could use when showing a prospective customer the benefits of installing a water filter system in a home or business.
After a little research we found several water filter demonstration kits on the market and readily available: One for Reverse Osmosis Demonstrations, one for Water Softener Demonstrations, and one for both Water Softener & Reverse Osmosis Demonstrations.