From colouring-in tests to daily monitoring of your parameters! Regulatory requirement HSLF-FS 2021:11.

Monitoring of disinfectant efficacy. The operator should check the free chlorine and pH levels in pools where chlorine is used as a disinfectant every day the pool is open for bathing. These parameters should be checked several times a day in larger facilities and in high-temperature pools.

Where automatic pH control and disinfectant dosing equipment is present, the operator should check its readings daily. The operator should also check bound and total chlorine levels daily. The results of the checks should be documented.

Tips

• Staining tests* provide results at the appropriate point in the basin. The last place to be stained is suitable for sampling.
• Check all pools, every day!

Different basins have different conditions and loads. It is therefore essential that sampling is carried out in each individual basin, even if several basins are connected to a common water
treatment.

• The colouring test is a mandatory test and is performed according to SS EN 15288. Read more.

Instructional films - Tips & advice

Check out our instructional films and our youtube channel where we offer you lots of experience-based knowledge that makes your everyday life easier! You will find lots of instructional films and useful tips and advice. For example, how to calibrate your analysing and measuring instruments, how to take bacterial samples correctly, and how to care for and maintain your facility in the best possible way.

Lilian Labs - Analytical equipment

LILIAN measuring instruments - Simple, fast and reliable. The best and most reliable analyser on the market. Faster - Smarter - Safer!

Chlorine reaction time faster with LILIAN than with 10 mm cuvettes?

To determine the chlorine value in the water, a distinction is made between two forms: free chlorine, which is available for disinfection, and bound chlorine, which has already reacted and can no longer contribute to swimming pool hygiene. When measuring with photometers, both values should be determined one after the other: first the free chlorine, then the total chlorine value. If the measured free chlorine value is subtracted from the total chlorine, the value for bound chlorine in the water is obtained.

When measuring with photometers using 10 mm cuvettes, it is usually necessary to wait between 60-120 seconds between measurements for free chlorine and total chlorine. This time is required for the chemical reaction that causes the colour change for total chlorine.

We are therefore often asked: How is it possible that LILIAN can measure both values within 60 seconds, is a different chemical used here?

No, the chemicals in SensoSticks for LILIAN are defined by DIN19643 and ISO 7393-2. The reason lies elsewhere: Due to the microstructures of the SensoStick, the smaller sample volume and thus the significantly smaller amount of chemicals, the reaction in the SensoStick takes place much faster than in 10 mm cuvettes, namely within seconds. This is one of the reasons why the measurement of chlorine and pH with LILIAN takes less than 1 minute.

If you want to know more or order your Lilian, contact us on 0300 83 70 10 or email info@enviroprocess.com and we'll tell you more.

ProLab P5 - An affordable analyser with easy handling

ProLab P5 is used to analyse several of the parameters included in the self-monitoring of pool water treatment (chlorine, pH, alkalinity and hardness), which enables the calculation of Langlier's index. Performs a photometric measurement that meets the regulatory requirements for analysis method and accuracy. Supplied with Swedish manual, cuvettes and reagents in a practical bag.

ProLab Combi bag

The most reliable analysing instruments on the market. The premium ProLab Combi Bag with a selection of the best instruments on the market fulfils the highest requirements and functionality for bathing water analysis.

You are welcome to contact us to find out more and to ensure which equipment is best suited to your facility.