Description This is tool kit specially designed compatible with testing swimming pool water quality and is used to maintain proper chlorine, bromine and PH chemical levels in swimming pools and spas. Practical and useful, a great helper compatible with you. Features - Color: As shown.- Material: Paper.- Size: 500.00X1.50X0.10cm/196.50X0.59X0.04 inch.- It is made of high-quality material compatible with durable and safe to use.- The test paper has high precision with simple operation. Very useful.- It is compact and convenient to storage and carry around with you.- Quickly test the PH, residual chlorine, bromine, total chlorine, total alkalinity and total hardness in water.- The test paper is widely used compatible with swimming pools, spas and other industries.Packing list: 1 x roll of PH test strip