Transcription of Conductivity to TDS Conversion Table - astisensor.com
1 Advanced Sensor Technologies, Inc. 603 North Poplar Street, Orange, CA 92868-1011 Tel.: (714) 978-2837, Fax: (714) 978-6339 Website: IOTRONTM Trademark of ASTI IOTRONTM pH / ORP / ISE / Conductivity Measurement Products Lines Conductivity TO TOTAL DISSOLVED SOLIDS (TDS) Conversion Table Conductivity at 25 C TDS KCl TDS NaCl TDS 442 ppm Value Factor ppm Value Factor ppm Value Factor 84 S 447 S 1413 S 1000 1500 S 1050 8974 S 5101 4487 7608 12,880 S 7447 7230 11,367 15,000 S 8759 8532 13,455 80 ms 52,168 48,384 79,688 TDS 442 This solution best represents natural freshwater.
2 The 442 standard was nearly 50 years ago and it is still the world s most accepted standard. TDS NACl This sodium chloride solution best represents seawater, brackish water, or other high saline solution. KCl TDS This potassium chloride solution is a very stable salt and is an international calibration standard for Conductivity measurements.
