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TDS Meter by Hanna Instruments

By Ken Adachi
October 27, 2000

TDS stands for Total Dissolved Solids. This meter is often used by the water industry to measure the level of minerals in water, however it gives a relatively accurate reading of colloidal silver ppm. The only way to obtain a true parts per million (ppm) measurement of a collodial silver sample is to send it out to a lab equipped to analyse the CS. That can be time consuming and very expensive. Most producers of CS are now rating their ppm with a TDS meter and adding the nomenclature "TDS" after the ppm number. For example, 10 ppm TDS, means 10 ppm as measured with a TDS meter.  For our purposes, it's more than accurate enough. It takes all the guess work out of trying to figure how concentrated your CS solution is. This meter works equally well measuring standard DC CS or the high voltage AC CS such as Merlin's Super Silver mentioned above. These model TDS 1 meters with automatic temperature compensation are brand new and top of the line from Hanna Instruments, one of best names in laboratory measuring equipment. Specifications as follows:
Range::                 0-999 ppm (mg/L)                            Batteries:     4 x 1.4v alkaline (Life approx. 150 hours)
Resolution:           1 ppm                                               Dimensions:  150x30x24 mm (5.9x1.2x0.9")
Accuracy:             +/- 10ppm                                        Weight  85 g  (3 ozs.)
Typical EMC                                                                Operating Environment:  0-50 degrees C/ 95 % RH
Deviation:             +/- 1% F.S
Compensatrion      0-50 degrees C (41-122 degrees F).

The meter comes with a sturdy, snap lid plastic case and jeweller's screwdriver for re-calibration if desired. All units are factory calibrated and include calibration test results. To test the unit, you can dip it in distilled water up to the max level indicated on the side on the meter. You should get a reading of zero. After measuring each CS solution sample, you should rinse with distilled water in between and when finished. $70. (Item #3S)
See Products page for ordering info.

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All information posted on this web site is the opinion of the author and is provided for educational purposes only. It is not to be construed as medical advice. Only a licensed medical doctor can legally offer medical advice in the United States. Consult the healer of your choice for medical care and advice.