A refrigerant liquid packed in an aerosol. When released, it operates as a freezing gas, making the chewing gum hard and brittle. In this brittle state, the gum loses its adhesion and can be removed simply from the surface.
Residual Chlorine Test Strip, 5ppm
The Residual Chlorine test strip is for use in ensuring free chlorine levels in drinking water are sufficient to inactivate the bacteria and viruses that cause diarrheal disease, as well as ensuring the water is protected from re-contamination during storage.