Alkalinity
Helps keep pH from changing too quickly.
Safe, healthy, clean, crystal-clear and sparkling water.
With BioGuard Water, we provide complimentary, highly accurate computerised analysis for pool or spa water. Bring in a ½ litre sample and we will test it, talk you through the results and explain the products your water may require. Getting the balance of your pool or spa water right is critical to keeping it safe and comfortable to use.

Helps keep pH from changing too quickly.
Maintained for swimmer comfort and water balance.
Helps protect chlorine from ultraviolet light.
A common sanitising method used to kill bacteria.
Important for protecting pool surfaces and balance.
Clarifiers, algaecides and oxidisers support water quality.

| Parameter | Minimum | Ideal | Maximum |
|---|---|---|---|
| Free chlorine (ppm) | 1 | 2–4 | 10 |
| Combined chlorine (ppm) | 0 | 0 | 0.2 |
| Total bromine (ppm) | 2 | 4–6 | 10 |
| pH | 7.2 | 7.4–7.6 | 7.8 |
| Total alkalinity (ppm) | 60 | 80–100 | 180 |
| Calcium hardness (ppm) | 150 | 200–400 | 500–1000 |
| Cyanuric Acid (ppm) | 10 | 30–50 | 150 |
Bring approximately half a litre of pool or spa water to our Gateshead store.
We complete an accurate computerised test of the sample.
Our team talks you through the results and explains the water balance.
We recommend only the products or adjustments your water requires.
Follow the treatment advice to maintain clear, comfortable and balanced water.
Call our experienced Newcastle pool and spa team for advice, appointments and product support.