Recreational Water

As a general rule, bromine is used to treat hot tubs and spas and chlorine is used for the treatment of pools, although there is much cross-over.

Bromine is more active at higher pH levels and more stable and effective at higher temperatures than chlorine.

For those with sensitive skin, bromine can be preferable as it does not cause as much skin and eye irritation as chlorine.

Testing bromine levels is essential for regulatory compliance and verifying the efficacy of the disinfectant, preventing the risk of waterborne illnesses and ultimately ensuring swimming pools and spas are a safe environment for their bathers.

Proper calcium hardness levels are imperative for preventing equipment corrosion and scale formation, thereby extending the longevity of pool infrastructure.

Our water analysis technologies offer insights into calcium hardness levels, facilitating informed decisions in water treatment and maintenance.

Testing total alkalinity ensures water balance, which is essential for the effectiveness of disinfection processes and the comfort of swimmers.

Total alkalinity is tested photometrically, and should be measured at least once a week to prevent corrosion, scaling or inefficient disinfection of a swimming pool or spa.

Control of phosphates is especially important for outdoor pools and spas, as high phosphate levels can lead to water discoloration and reduced water quality.

Testing phosphate levels is essential for identifying and mitigating potential algae bloom risks.

By monitoring phosphate concentrations, facility operators can implement appropriate treatment measures to prevent the growth of algae and maintain good water quality.

This is called salt water chlorination. Electrolysis is used to produce hypochlorous acid (HCIO) and sodium hypochlorite (NaCIO) which are the usual sanitising agents commonly used in a swimming pool.

Testing salt levels is essential for ensuring the proper functioning of these systems and maintaining adequate chlorine production.

Accurate salt testing facilitates adjustments to achieve optimal salt concentrations, supporting efficient chlorination and water sanitation.

Testing cyanuric acid levels is essential for ensuring the effective stabilisation of chlorine, therefore optimising its disinfectant properties. Maintaining appropriate cyanuric acid concentrations is vital for efficient pool management in outdoor swimming pools and spas.

Our easy-to-use, fast water analysis technologies deliver accurate measurements, allowing facility managers to maintain stable cyanuric acid levels and ensure their chlorine disinfectant is effective.

Fluctuations in pH can impact the effectiveness of chlorine and other disinfectants, as well as the comfort of swimmers.

pH can be measured photometrically using an indicator such as Phenol Red, or by using an electrochemical probe.

Monitoring pH levels enables proactive adjustments to maintain optimal pH levels.

An overall range of 7.0–7.6 is acceptable in most pools, but the pH range should always be kept within the range recommended for the disinfectant you are using.

Copper can enter the water through various sources such as algaecides, copper-based equipment, or natural sources.

While a trace amount of copper is necessary for effective algaecide treatment, excessive levels can lead to staining of pool surfaces and equipment, as well as cause irritation to swimmers’ skin and eyes.

Regular testing allows pool operators to monitor copper levels and take appropriate corrective actions if necessary. By maintaining optimal copper levels, pool and spa owners can enjoy clean, clear water that is safe and inviting for all users.

If the water will dissolve minerals around it, then it is described as corrosive. If the water will tend to deposit minerals it is considered scaling.

Water balance tests include the Langelier Saturation Index, which requires measurement of the temperature and total dissolved solids of the water sample as well as calcium hardness, total alkalinity, and pH.

A water balance calculation can be carried out using our Lumiso Pooltest Expert photometer.