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TDS Standards

For the calibration of TDS testers and TDS meters. These standards are 4:4:2 solutions (40 % sodium sulphate, 40 % sodium bicarbonate, 20 % sodium chloride) made from analytical grade materials.

TDS Standard 2,000 ppm

4:4:2 Standard

  • 100265 TDS Standard 2,000 ppm, 250 mL bottle ... $16.40 + GST
  • 100266 TDS Standard 2,000 ppm, 500 mL bottle ... $23.10 + GST
  • 100267 TDS Standard 2,000 ppm, 1 L bottle ... $32.50 + GST

(availability: next day)
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