9″ MLT Cartridge Candle (Carbon & Sediment Cloth) from the House of “SRD International” is 100% Premium Quality Product and it helps you to improving the health and immunity by drinking the Save and Healthy Water. The Dimension of the MLT Candle @: 9 inches (Length) x 2.5 inches (Width) x 2.5 inches (Height). It is Compatible with all Standard types of 10″ Pre Filter Housing Bowl of Domestic RO Water Purifiers. 9″ MLT Cartridge Candle (Carbon & Sediment Cloth) is made from 100% Virgin Coconut Carbon & 100% Virgin Sediment Cloth Material and each Cartridge is individually shrink-wrapped. The 9″ MLT Carbon and Sediment Cloth Candle used in all RO Prefilter Housing as first stage of purification and it clean the raw tap water before being purified by your RO water purifier internal component. In addition to filtering out the physical impurities it also increases the life of the RO Internal Parts (like Inline Sediment & Inline Carbon Filter, Pre-Activated Carbon Filter, Post Inline Carbon Filter & RO Membrane) & also increased the taste of water and make healthy for drinking. 10″ 2in1 Multi Wrench Spanner Key from the house of “SRD International” is suitable for opening of all types of 10″ Prefilter Housing Bowl & Membrane Housing Bowl of Domestic Water Purifiers. It is made from 100% Virgin Polypropylene (PP) Material and 100% Reliable for uses. pH meter is an electric device used to measure hydrogen-ion activity (Acidity or Alkalinity) in the water. The pH ranges stand between 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0 is neutral. The pH of Pure Water (H20) is 7. The water of pH 7 & 7+ is also save for drinking.