Perfect for the residential user, Wave test strips are manufactured in the UK and subject to the same rigorous quality control as other pool testing products. Supplied in pots of 50 tests, the procedure is exactly as expected - dip, shake off the excess and compare to the colour chart printed onto the pot. Test strips available: 3-way test strip providing testing on chlorine, pH, alkalinity Perfect for the residential user, Wave test strips are manufactured in the UK and subject to the same rigorous quality control as other pool testing products Supplied in pots of 50 tests, the procedure is exactly as expected - dip, shake off the excess and compare to the colour chart printed onto the pot.