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        PoolLab DPD No 4 Photometer Reagent Tablets (50 pack)    
    
        
- Official PoolLab 1.0 Reagent Tablets - DPD No 4 - 50 tablet pack.
 
- Photometer grade
 
- For all photometers including Pool Lab 1.0, Pool Lab 2.0 and Scuba II
 
- Tests for Active Oxygen (MPS)