How often should I test a swimming pool?

Domestic pools at least weekly, holiday lets daily and commercial sites three times a day to comply with PWTAG guidance.

Are strips accurate enough for a swimming pool?

For routine domestic checks yes, when used in date and stored dry. Commercial sites should pair strips with a photometer for compliance.

What is the difference between free and total chlorine?

Free chlorine is the active sanitiser, total chlorine is free plus combined. The gap between them is combined chlorine, the chloramine smell.

How do I calibrate a photometer?

Most reagent photometers need no field calibration. Send the unit for a service every 12 months, or follow the manufacturer self-check procedure.

Pool Water Testing

Pool testing turns guesswork into a logbook. Quick 7-in-1 strips suit weekly checks at the poolside; a digital photometer gives lab-grade readings for compliance and for adjusting commercial dosing pumps.