nuoshen 3 in 1 Water Test Strips,Pool Spa Hot Tub Test Strip for Chlorine, PH and Alkalinity Testing(100pcs) Price: £8.99 (as of 23/10/2021 19:39 PST- Details)

3 IN 1test strips :Tests for essentials including free Chlorine(Bromine,Total Alkalinity and pH levels)
Advantages: We have done coating treatment, good water transmission
Application:Suitable for drinking water, aquariums, swimming pools and spas, industrial water, ponds and hot springs