What is a GPD Membrane? – Complete Guide

 When buying an RO water purifier, you must have seen terms like 80 GPD, 100 GPD, or even 300 GPD on the RO membranes. But what exactly does GPD mean?

🔹 Understanding GPD in RO Membranes

GPD = Gallons Per Day
It tells you how much purified water the RO membrane can produce in 24 hours under standard conditions.

• 80 GPD Membrane → Produces up to ~300 liters/day

• 100 GPD Membrane → Produces up to ~380 liters/day

• 300 GPD Membrane → Produces up to ~1100 liters/day

So, a higher GPD means faster filtration and more water output.

👉 Explore RO Membranes here:
Domestic RO Membranes at Romegamart

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🔹 Why Does GPD Matter?

The right GPD ensures your purifier meets your family size and daily water demand:

• Small Families (3–5 members) → 80 GPD is enough

• Medium to Large Families (5–8 members) → 100 GPD is ideal

• Commercial Use / Offices → 300 GPD or higher

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🔹 Factors That Affect GPD Performance

Even if you buy a 100 GPD membrane, the actual water output may vary due to:

• Inlet Water Pressure (low pressure reduces output)

• Water Temperature (colder water slows filtration)

• TDS Levels (higher TDS puts more load on the membrane)

• System Design (pump & pre-filters matter)

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🔹 Price of GPD Membranes in India

On average (2025 prices):

• 80 GPD RO Membrane → ₹450 – ₹900

• 100 GPD RO Membrane → ₹600 – ₹1200

• 300 GPD RO Membrane → ₹2500 – ₹4500

👉 Check latest prices at Romegamart

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🔹 Final Words

A GPD membrane is the heart of your RO purifier. Choosing the right one ensures:
✔ Sufficient daily water supply
✔ Better performance in high TDS areas
✔ Cost savings in the long run

If you’re planning to buy an RO membrane, always pick according to family size + local water TDS.

👉 Browse a wide range of RO membranes here:
https://romegamart.com/product/domestic-spares/membrane/