Abstract: A closure clip for fastening closed a bag or similar article having a unitary, generally flat, slotted body having at least two elongated juxtaposed space-apart members. The members define at least one slot extending longitudinally between the members and the members are further shaped so that the slot has a wide, bag-gathering area located in an open end of the slot. The slot transitions from the bag-gathering area to a narrow bag-accepting area located at a closed end of the slot. The invention also includes at least one aperture located in the body spaced-apart from the members and the slot and sized to accommodate a human's finger or thumb. A closure clip is fastened and removed from the open end of a bag using arm strength and is not reliant on finger strength or dexterity making the clip particularly user friendly.

Abstract: A method of determining the concentration of a surfactant-based neutral cleaner in a wash liquor, a hand-held apparatus, and a test kit for carrying out the method are provided. According to the method, a cleaner composed of the cleaning agent, an amount of a reducing sugar that is proportional to the cleaning agent, and a sugar preserving agent, is added to a wash solution. A sample of the resulting wash liquor is applied to an enzyme system that reacts with the reducing sugar to form a colored end product. After a suitable time interval, the color of the reaction product can be photometrically measured to provide a color intensity value that is correlated to the amount of reducing sugar in the wash liquor, which, in turn, is correlated to the amount of cleaning agent in the wash liquor. The portable apparatus can be packaged with associated test supplies and reagents in a test kit.