No products in the cart.
Stop Fighting Your Water.
End the cycle of pH bounce and staining. We believe you should enjoy your pool, not battle it. Use the method that prioritizes clarity and prevents damage.
The Hamilton Index: Less Chemical. Less Staining. More Happy.
Is Your Pool Balanced? Or Are You Just Chasing Numbers?
For decades, the swimming pool industry has relied on the Langelier Saturation Index (LSI) to measure water balance. But there is a fundamental problem: Dr. Wilfred Langelier invented the LSI in the 1930s for closed municipal water pipes, not open bodies of water like your swimming pool.
While the LSI focuses heavily on pH to predict scaling in dark, closed pipes, it fails to account for the unique, open-air environment of a swimming pool. This reliance on outdated "range chemistry" often leads to a constant battle—adding acid to lower pH, then adding bicarbonate to raise alkalinity, endlessly "bouncing" your water chemistry and wasting money.
Enter the Hamilton Index.
Developed by United Chemical founder Jock Hamilton, the Hamilton Index was built from the ground up specifically for swimming pools. It recognizes a scientific truth that the LSI misses: in an open system, Total Alkalinity is the key to preventing stains and scale, not just pH.
How It Works The Hamilton Index simplifies water care by comparing your Total Hardness to Total Alkalinity. Instead of forcing you into a narrow, unstable pH range, it determines a safe "Alkalinity Ceiling" specific to your water's hardness.
- No more pH bounce: By allowing a naturally higher, more stable pH (7.8 – 8.2), you reduce the need for constant acid adjustments.
- True Balance: We prioritize the relationship between Hardness and Alkalinity to lock in water clarity.
Why the Hamilton Index is Superior to LSI:
- Prevents Staining: The LSI was designed for pipes where staining wasn't visible. The Hamilton Index specifically prevents the precipitation of minerals that cause unsightly pool stains.
- Reduces Chemical Use: By working with your water’s natural tendency to rise in pH, rather than fighting it, you use significantly less acid and buffer.
- Designed for Reliability: This isn't theoretical; it is the practical, proven method that has been embedded in our DNA since Jock Hamilton founded the company.
The Result? A pool that is safe, sparkling, and simple to maintain. Because what we do matters—and fighting with chemistry ranges doesn't make anyone happy.
