NKD (Naked) Photometer Calc Hardness Strips 50 Poppits The unique slow-dissolving stick design

The unique slow-dissolving stick design allows this chlorine for pools to last up to twice as long as standard chlorine products

stabiliser-free oxidiser treatment for swimming and spa pools

This specially refined pool salt is naturally produced through the power of sun and wind

Compatible with any salt or mineral pool

Maintain crystal-clear

NKD (Naked) Photometer Calc Hardness Strips 50 Poppits The unique slow-dissolving stick designNKD Photometer Calcium Hardness Test Strips (50) Accurate Calcium Hardness Testing for Freshwater Pools & Spas Protect your pool surfaces and equipment with NKD Photometer Calcium Hardness Test Strips, designed exclusively for use with the Naked Pools Digital Photometer Kit. These highquality strips deliver fast, precise Calcium Hardness readings, helping you maintain balanced, longlasting, crystalclear freshwater. Benefits of NKD Calcium Hardness