Shipping FREE on all orders over £75 - 
Slow-dissolving, stabilised chlorine tablets made of trichlorisocyanuric acid and other components with a high active chlorine content. Residue free, calcium free. With multifunctional properties. 250gram tablets.
5 functions:
- continuous disinfection
- algaecidal effect
- clarifier
- hardness stabiliser
- chlorine stabiliser