Description The test paper is multi-functional, can detect the water quality, can be used to detect bromine and alkalinity, hardness, chlorine and ph level. By regularly testing your pool water, you can prevent the growth of algae. The test paper is easy to use and requires no special equipment or training. Features -Color:As Shown-Material:Paper-Size:9.50X3.70X0.50cm/3.73X1.45X0.20in-With large quantities, which can meet your different using and replacement needs.- These test paper are professional, which are designed for testingthe water quality in swimming pool, fish tank or others.- Get your results quickly and easily whether water from your tap, well, filtered, or any other water source. - Easy to operate and test, just need to s imply dip water and compare with large color chart designed on bottle.- High-class material and fine craftsmanSHLP, durable and sturdy for a long time. Packing list: 50 x Pool Test Strips