Zimba automatic chlorine dispenser

Weight: 12 kg The outer shell is made of food grade fibreglass and the inner parts are made of virgin polypropylene plastic.

The Zimba device automatically mixes chlorine into water in the correct proportion, regardless of the flow rate of the water. The Zimba device can be fitted to a rural community’s existing water source, such as the hand pump of a well, the tap of a rainwater harvesting cistern, or the faucet of a piped water system. The device is gravity powered. Device installation takes under 30 minutes, chlorine refilling takes under 10 minutes. ^{Interview with representative} The following video provides operational overview: Introducing ZIMBA

A step-by-step Operations & Maintenance Guide is provided along with all accessories for users and implementing NGOs. ^{Interview with representative}

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Findings from this Article: “Water samples collected directly from the ZIMBA devices were between 0.2-2ppm (a “safe” chlorine residual) 91% of the time (8% were slightly above 2ppm), whereas only 13% of raw handpump water samples among treatment compounds and 39% of handpump samples among control compounds had a safe chlorine residual. A total of 81% of stored drinking water samples had a safe chlorine residual among treatment HHs, compared to 29% of stored water samples in control compounds (p<0.001). Free chlorine levels in stored water were significantly higher in treatment HHs compared to control (mean difference=0.33ppm, p<0.001)….The concentration of E. coli in stored water was lower in treatment HHs compared to control HHs (mean difference=0.4cfu/100ml, p=0.004).”

Sodium hypochlorite is highly reactive and volatile. Users are advised to never store the solution in any metallic container as chlorine will react with the metal. Sodium hypochlorite should always be stored or transported in opaque plastic containers to prevent exposure of the solution to UV radiation from sunlight, which will decrease its shelf life. In case the available chlorine solution is of a higher concentration than what is needed in the Zimba unit, users are responsible for diluting it appropriately with water.