CTL Scientific Aquadur Sensitive - box of 50 strips (6 x 95 mm) - Hazardous : N
AQUADUR Sensitive test sticks include all the same benefits as the classic AQUADUR test strips, but feature a special, very low measuring range. Gradation: 0-0.3-0.6-1.1 °d / 0-5-10-20 ppm CaCO3