50 Tests – Best-selling Total Hardness Test (UK, EU & US)A fast, safe, and dependable way to measure Total Hardness in water as calcium carbonate. Ideal for domestic checks or professional use, delivering clear, accurate colour-match results within seconds.These WaterWorks™ dip-and-read strips require no additional reagents or accessories. A precise comparison chart is printed on every bottle, making testing simple and highly reliable. The formulation uses only trace chemicals, ensuring the strips are safe, non-hazardous, and exempt from SDS requirements. One of our most popular solutions for routine water quality monitoring.Detection Range: 0, 40, 80, 120, 180, 250, 425, 1000 ppm (mg/L)Contents: 50 test stripsTest Time: 3 secondsHow to UseDip one strip into the water sample for 3 seconds.Remove and match immediately to the colour chart. Complete reading within 1 minute.Result Guide>80 ppm: Detergents become less efficient.>120 ppm: Scale begins forming in pipes and appliances.>250 ppm: Dishwashers produce film on dishes.Why Test for Total Hardness?Around 60% of UK households have hard or very hard water, commonly exceeding 200 ppm. Excess hardness leads to clogged pipes, scale deposits, soap scum, reduced appliance lifespan, higher energy use, dry skin, dull hair, and dingy laundry. Conversely, overly soft water (<50 mg/L) may become corrosive to plumbing and equipment.Hardness minerals interact with cleaning products, reducing performance, increasing soap usage, and leaving residue on fabrics, dishes, skin, and hair. These deposits can irritate skin, affect pH balance, and cause clothing to lose colour and softness over time.Buy With ConfidenceITS test strips are produced in a controlled facility with rigorous quality checks to ensure consistency and accuracy. Stocked and distributed from our UK/EU office with full manufacturer support.