Safelink One/DEMA One (SL1/DM1) Portable distribution system was designed to be safe, ergonomic and versatile, continuing DEMA's tradition of creating products designed with the end user in mind. SL1/DM1 Sprayer and bubbler models are portable, making it easy to take the dispenser to where spray and foam applications are needed. There are five models to choose from, three high and two basic. Premium and Basic both have one place for chemicals or two places for chemicals and one for rinsing. The premium also has two positions of two chemical models. Premium use 4 ft (1.3m) discharge hose for easy use and large range.