Commercial RO System Calculator

How to estimate daily usage:

• Boiler feed: Check boiler capacity × cycles/day
• Window cleaning: Van capacity × fills/day
• Manufacturing: Process requirements + cleaning

If unsure, our team can help calculate this based on your specific application.

Peak Flow Rate:

The maximum flow rate needed at any one time. Leave blank if you're unsure - we'll calculate based on your daily requirement and operating hours.

Conductivity Guide:

Conductivity measures total dissolved solids (TDS) in water.

• UK Mains: 200-800 µS/cm typical
• Soft areas: 100-300 µS/cm
• Hard areas: 400-800 µS/cm

Check your water supplier's website or contact them for this value.

Output Quality Guide:

• <5 µS/cm: Ultra-pure (pharmaceutical, laboratory, electronics)
• 5-15 µS/cm: High purity (food production, dialysis)
• 15-50 µS/cm: Standard RO quality (boiler feed, window cleaning)
• 50-100 µS/cm: General industrial use

Note: Output <10 µS/cm typically requires mixed bed polishing after RO.

Where to find your water hardness:

Check your local water supplier's website. They usually have a postcode checker.

Hardness Guide (mg/l CaCO₃):

• 0-100: Soft
• 100-200: Moderately Hard
• 200-300: Hard
• 300+: Very Hard

Important: Water hardness requires pre-treatment softening to protect RO membranes.