Cart Product Price Quantity Subtotal × Clearwater Hot Tub, Pool & Spa Test Strips x 50 - 3 in 1 Measures Chlorine, PH & Total Alkalinity £8.15 Clearwater Hot Tub, Pool & Spa Test Strips x 50 - 3 in 1 Measures Chlorine, PH & Total Alkalinity quantity £16.30 Coupon: Apply coupon Update cart Cart totals Subtotal £16.30 Shipping Enter your address to view shipping options. Calculate shipping Select a country / region… United Kingdom (UK) Update Total £16.30 Proceed to checkout