Oakton (WD-35661-70) Deluxe TDS Calibration Kit W-O Meter TDS 447 Pouch (300 PPM) 5" x 40" membrane housings

5" x 40" membrane housings used in light commercial and small-scale industrial RO systems

or where sulfate interference limits the effectiveness of standard anion resins

The dual-media approach handles chlorine

Model Number NCP-10 Dimensions 10" x 2

typically 3–5 years depending on feedwater quality and cleaning frequency

Oakton (WD-35661-70) Deluxe TDS Calibration Kit W-O Meter TDS 447 Pouch (300 PPM) 5" x 40" membrane housingsOakton Water Quality Meters Oakton WD 35661 70 Deluxe TDS Calibration Kit W O Meter Field ready calibration kit with NIST traceable standards for accurate TDS testing in demanding environments NIST Traceable Standards 1% Accuracy at 25C Hard Shell Case Five Point Calibration The Oakton WD 35661 70 Deluxe TDS Calibration Kit provides everything you need to maintain measurement accuracy in the field or lab, organized in a protective foam lined case.