Reliable measurements Color development technology delivers stable, reliable test results, supported by a robust base material for precise water care. Fast results Color develops within 10 seconds, allowing immediate readings. An intuitive color reference card makes interpretation quick and supports efficient monitoring of spa water quality. Hygienic, single-use design 100 individually wrapped test strips enable hygienic sampling and accurate measurements. The ready-to-use strips require no prior preparation, supporting frequent testing with minimal setup. Practical and versatile Simple test method for whirlpools and swimming pools, providing reliable performance across different liquid environments and water conditions. Use scenarios - Home spa maintenance: perform quick daily checks to ensure comfortable, safe hot tub water and catch issues early. - Hospitality and public facilities: use between routine checks to verify pool and spa water quality and maintain guest safety. - On-site service and maintenance: convenient, on-the-spot testing during visits or repairs without special equipment.