Continue shopping “523540 Flow Switch Pentair ChemCheck Water Testing System” has been added to your cart. Product Price Quantity Total × 523540 Flow Switch Pentair ChemCheck Water Testing System $43.00 523540 Flow Switch Pentair ChemCheck Water Testing System quantity $43.00 Cart totals Subtotal $43.00 Shipping Shipping costs will be calculated once you have provided your address. Total $43.00 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update