The $14.90 Total Dissolved Solids Meter mentioned is at http://www.hannainst.com/products/promo/usa/usaprmo.htm
This is a real bargain! "Housed in a pocket sized ABS case, this electronic Total Dissolved Solids tester is very durable. It is the ideal meter for fish farming, agriculture, plating and water purification applications. TDS 1 is supplied complete with protective cap, calibration screwdriver and 4 x 1.4V batteries. Wide Measurement Range: TDS1 = 1 to 999 ppm Excellent Accuracy + 2% Full Scale Long Battery Life more than 1000 measurements One-Point Calibration ATC " (I think ATC means Automatic Temperature Calibration) Hanna is a major instrumentation manufacturer. You would have to go to a Conductivity Meter for more accuracy - they list a model HI 9033 with "4-Ring Technology & Full Range in a Portable Handy Model" $369.99 which is reasonable enough. They also have a $29.90 ph probe/meter! Rex -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>
