Price: Low to high. S$ 57.20. Hach Dpd Free Chlorine Reagent Powder Pillows, 10 Ml, pk/100 2105569. S$ 617.10. Hach Cod Digestion Vials, High Range Plus, 200 to 15,000 mg/L Cod, pk/150 2415915. S$ 1,149.50. Hach Sample Cell: 1" Square Glass 10 Ml Matched Set of 8 2495408. S$ 43.20.