United Filters International 10" x 4.5" Big Blue Depth String Wound Polypropylene Sediment Filter Micron (μm):100 Micron Built with a universal cap

Built with a universal cap that fits all permanent existing heads

Submerge the electrode fully into the 1413 µS/cm solution and allow the reading to stabilize at ambient temperature before executing the calibration sequence on your meter

Restore original factory performance to aging or damaged testers with genuine OEM sensor technology

Calibrate using standard buffer solutions appropriate to your expected measurement range

including carbon block filters

United Filters International 10" x 4.5" Big Blue Depth String Wound Polypropylene Sediment Filter Micron (μm):100 Micron Built with a universal capUnited Filters International 10" x 4. 5" Big Blue Depth String Wound Sediment Filter True depth filtration with high dirt holding capacity for whole house, well, and commercial applications Polypropylene Construction Wide Micron Range Available Chemical & Corrosion Resistant FDA & Non FDA Options UFI's string wound cartridge filters deliver superior one piece construction through a continuous high speed wind process. Designed for demanding chemical