Nature2 Test Strips

4 way test strips
Now you can check the level of "spa shock" (monopersulfate) with Nature2 (4) way test strips. Don't let a bad smelling spa run you out of your spa due to improper shocking. Keep your spa's water at its optimum levels. Test the monopersulfate, alkalinity and pH levels just by swirling the Nature2 strip in the water. Fast & Easy Test