Quick view CC-PP-4000-T Walchem CAL COLUMN, PP, 4000ML, 1"NPT MSRP: $626.00 Walchem calibration cylinders are designed to enhance the performance of chemical feed systems by providing a verification of the flow rate of the chemical feed pump. Robust construction of clear PVC, Glass or PP with an easy to read... MSRP: $626.00 Add to Cart The item has been added Add to Wish list Compare