Rkin Flash Reverse Osmosis System (5 Stage, Under Sink)

How often do the filters need replacing in this system?

Filter replacement schedules vary by stage and water usage. The sediment and carbon filters typically require replacement every 6-12 months depending on water quality and consumption. The reverse osmosis membrane lasts 2-3 years under normal conditions. The alkaline post filter should be changed every 12 months. The system's modular design makes replacements straightforward with twist-on cartridges.

What contaminants does this system actually remove from water?

The 5-stage filtration removes up to 99% of harmful substances including fluoride, chlorine, chloramines, heavy metals like lead and mercury, PFOA, PFOS, bacteria, viruses, sediment, rust and other dissolved solids. The reverse osmosis membrane provides the primary barrier against microscopic contaminants that carbon filters cannot capture. Laboratory testing confirms these removal rates under standard conditions.

Does this system require electricity to operate?

No, this is a gravity-fed system that operates using your existing water pressure without requiring electricity. The system uses your mains water pressure to push water through each filtration stage. This makes it more reliable than electric systems and eliminates ongoing energy costs. Installation is simpler as no electrical connections are needed.

How much space is needed under the sink for installation?

The compact design requires minimal under-sink space measuring approximately 38cm wide, 33cm deep and 43cm tall including the storage tank. The slim profile allows installation alongside existing plumbing and storage items. The lightweight construction enables wall mounting if floor space is limited. Most standard kitchen sinks provide adequate space for installation.

What is included with the system purchase?

The complete system includes all 5 filter cartridges pre-installed, a compact storage tank, chrome lead-free faucet, all necessary tubing and fittings, mounting hardware and detailed installation instructions. The system arrives fully assembled requiring only connection to your water supply and faucet installation. No additional components are needed for basic operation.

How does the alkaline post filter improve water quality?

The AlcaPure alkaline post filter adds back beneficial minerals like calcium and magnesium that are removed during reverse osmosis. This remineralisation process improves taste and increases the water's pH to a healthy 7-8 level. The alkaline water provides better hydration and taste compared to acidic or neutral water. This final stage ensures you receive both pure and healthy drinking water.

Can this system be installed by a homeowner or does it require professional installation?

The system can be installed by most homeowners with basic DIY skills using standard tools. The fully assembled unit simplifies installation to connecting water lines and mounting the faucet. Detailed instructions guide you through each step. However, if you're uncomfortable with plumbing connections or local regulations require it, professional installation ensures proper setup and warranty compliance.

How long does the storage tank take to refill after use?

The 75-GPD membrane produces water 50% faster than standard systems, typically refilling the storage tank in 2-4 hours depending on your water pressure and tank size. The enhanced production rate means less waiting between uses compared to slower systems. Initial fill after installation takes longer as the system cycles through startup processes and filter conditioning.