Making your own standard will yield the most accurate results. This is done by formulating a mixture of salts in relative proportions to those that simulate the solution being tested, then DISSOLVING the mixture into distilled water.

This should be done according to the FOLLOWING formula:

1 mg salt mixture/litre of distilled water = 1 ppm TDS,

(or)

X ppm TDS = X mg of salts + one litre of distilled water.

CHOOSE a ppm value for a calibration solution which is as close as possible to the expected ppm values of the test solutions. If the ppm content of the test solution is expected to vary a great deal, it is best to choose a ppm value for the calibration solution in the upper 1/3 of the expected TDS MEASUREMENT range.

• Above mentioned Conductivity Analyzer Parameters may change from VENDOR to vendor

Making your own standard will yield the most accurate results. This is done by formulating a mixture of salts in relative proportions to those that simulate the solution being tested, then dissolving the mixture into distilled water.

This should be done according to the following formula:

1 mg salt mixture/litre of distilled water = 1 ppm TDS,

(or)

X ppm TDS = X mg of salts + one litre of distilled water.

Choose a ppm value for a calibration solution which is as close as possible to the expected ppm values of the test solutions. If the ppm content of the test solution is expected to vary a great deal, it is best to choose a ppm value for the calibration solution in the upper 1/3 of the expected TDS measurement range.