{"title":"Direct Flow RO NC-9 replacement cartridges","description":"","products":[{"product_id":"nvc-9-no-1-weakly-alkaline-mineralization-cartridge","title":"NC-9 No#1 Weakly Alkaline Mineralization Cartridge","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe water produced is weakly alkaline water, 7\u003c\/span\u003e\u003cspan class=\"s2\"\u003e≤\u003c\/span\u003e\u003cspan class=\"s1\"\u003ePH\u003c\/span\u003e\u003cspan class=\"s2\"\u003e≤\u003c\/span\u003e\u003cspan class=\"s1\"\u003e9, which can help balance the acidity and alkalinity\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003ein the body, reduce excessive uric acid, and alleviate the symptoms of shoulder pain, lumbago and pain.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eCompared with tap water, which can only dissolve an average of 11.7 milligrams of uric acid per 100\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003emilligrams of water, weakly alkaline water can dissolve an average of 21.3 milligrams of uric acid, which\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eis about twice as much as that of the former.\u003c\/span\u003e\u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":45408667205809,"sku":"","price":145.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"},{"product_id":"nc-9-no-2-alkaline-mineralization-cartridge","title":"NC-9 No#2 Alkaline Mineralization Cartridge","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe water produced is alkaline water, with a pH of 10 \u003c\/span\u003e\u003cspan class=\"s2\"\u003e≤\u003c\/span\u003e\u003cspan class=\"s1\"\u003e11. Alkaline water has anti-fatigue, antioxidant,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003esuperoxide dismutase activity, glucose regulation, and lipid regulation properties, and can be used to\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003ealleviate the symptoms of stomach acidity, indigestion, gastrointestinal abnormalities, chronic dysentery,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eand other illnesses, as well as removing fats from the body, which is a good health benefit.\u003c\/span\u003e\u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":45408707182769,"sku":null,"price":145.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"},{"product_id":"nc-9-no-3-strontium-rich-mineralization-cartridge","title":"NC-9 No#3 Strontium-rich Mineralization Cartridge","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe main mineral trace element in water is strontium, with a strontium Sr²\u003c\/span\u003e\u003cspan class=\"s2\"\u003e⁺\u003c\/span\u003e\u003cspan class=\"s1\"\u003e \u003c\/span\u003e\u003cspan class=\"s3\"\u003e≥\u003c\/span\u003e\u003cspan class=\"s1\"\u003e0.2mg\/L. Drinking strontium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eover a long period of time can replenish strontium, which can help in the growth and development of the\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eskeleton, enhance the density of the body. It is effective in slowing down the progression of type 2\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003ediabetes, preventing cerebral and cerebral complications, and preventing the formation of non-alcoholic\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003efatty liver disease.\u003c\/span\u003e\u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":45408714588337,"sku":null,"price":155.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"},{"product_id":"nc-9-no-4-strontium-metasilicate-mineralization-cartridge","title":"NC-9 No#4 Strontium \u0026 Metasilicate Mineralization Cartridge","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe main mineral trace elements in the water are strontium and metasilicic acid, with strontium (Sr²\u003c\/span\u003e\u003cspan class=\"s2\"\u003e⁺\u003c\/span\u003e\u003cspan class=\"s1\"\u003e) and\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003emetasilicic acid (H\u003c\/span\u003e\u003cspan class=\"s3\"\u003e₂\u003c\/span\u003e\u003cspan class=\"s1\"\u003eSiO\u003c\/span\u003e\u003cspan class=\"s3\"\u003e₃)≥\u003c\/span\u003e\u003cspan class=\"s1\"\u003e0.2 mg\/L. Drinking this water on a regular basis can help replenish strontium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eand metasilicicic acid, increase the elasticity of the skin, and keep the skin lustrous, white, and tender. It\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003ealso helps to restore the elasticity of the tubes, removes fat deposits from the inner walls of the tubes,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eand prevents atherosclerosis and coronary heart disease from occurring in the cerebral and vascular\u003c\/span\u003e\u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":45408719798449,"sku":null,"price":155.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"},{"product_id":"nc-9-no-5-alkaline-fully-mineralized-cartridge","title":"NC-9 No#5 Alkaline \u0026 Fully Mineralized Cartridge","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eAlkaline water contains a variety of minerals and trace elements, including calcium, magnesium,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003epotassium, sodium, strontium, zinc, and metasilicic acid. Drinking it on a regular basis can help to\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003ereplenish calcium and zinc, preventing calcium and zinc deficiencies that can lead to osteoporosis,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003econvulsions, hypoplasia, rickets, pregnancy, and breastfeeding, Calcium and zinc deficiencies in\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003epregnant and lactating women, menopausal women, children's growth retardation, appetite deficiency,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eanorexia, recurrent mouth ulcers and acne.\u003c\/span\u003e\u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":45408727105713,"sku":null,"price":155.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"},{"product_id":"nc-9-r-o-membrane","title":"NC-9 R O Membrane","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eR O cartridge for the  Nc9 \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRO elements use a thin-film composite (TFC) structure:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eA dense polyamide active layer (~0.1–0.2 microns thick)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA porous polysulfone support layer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA polyester backing for mechanical strength\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe active polyamide layer is the actual separation barrier. It is not a simple “sieve.” It works by a solution–diffusion mechanism, not by visible pores you can measure with calipers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1. Size exclusion (molecular sieving)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe effective free volume between polymer chains is extremely small (on the order of angstroms). Hydrated ions (Na⁺, Ca²⁺, Cl⁻, SO₄²⁻) are physically too large, once surrounded by their hydration shell, to diffuse easily through the polymer matrix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWater molecules are much smaller and diffuse through more readily.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2. Charge repulsion (Donnan exclusion)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe polyamide layer carries a slight negative surface charge under normal operating pH.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIt repels negatively charged ions (e.g., Cl⁻, SO₄²⁻)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMultivalent ions (Ca²⁺, Mg²⁺, SO₄²⁻) are rejected more strongly than monovalent ions (Na⁺, Cl⁻)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis electrostatic interaction significantly increases salt rejection efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e3. Pressure-driven chemical potential gradient\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eYou apply pressure greater than the natural osmotic pressure of the feed water.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePressure forces water molecules into the membrane surface.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWater dissolves into the polymer matrix.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWater diffuses across.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDissolved salts are left behind and flushed away in the concentrate stream.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt’s not “filtering” in the traditional sense. It’s a thermodynamically driven mass transfer process.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTypical performance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMonovalent salt rejection: 95–99%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDivalent salt rejection: 98–99.8%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBacteria\/viruses: \u0026gt;99% rejection (size exclusion)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOrganics: depends on molecular weight and polarity\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e","brand":"The Filter Guy Ltd T\/A Wholesale Filters","offers":[{"title":"Default Title","offer_id":46677488435377,"sku":null,"price":285.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/files\/ppc.jpg?v=1745417189"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/6641\/collections\/IMG_5796.jpg?v=1745417344","url":"https:\/\/www.wholesalefilters.co.nz\/collections\/direct-flow-ro-nc-9-replacement-cartridges.oembed?page=2","provider":"The Filter Guy Ltd T\/A Wholesale Filters","version":"1.0","type":"link"}