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#1
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TDS Meter
Recently, I visited a hydroponic supply brick and mortar store to look
at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
#2
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TDS Meter
Sorry Gene, I'm no help. I have one, but don't use it.
K Barrett "Gene Schurg" wrote in message ... Recently, I visited a hydroponic supply brick and mortar store to look at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
#3
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TDS Meter
TDS meters should only be used as point-of-reference devices.
They are merely cheap electrical conductivity (EC) meters that have a built-in conversion factor for solids. Unfortunately, the conversion factor should change with the specific ions in the solution to be measured, making the built-in one worthless for "real" data. Read this: http://www.firstrays.com/tds_and_ec.htm -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies. Books, Artwork, and lots of Free Info! "Gene Schurg" wrote in message ... Recently, I visited a hydroponic supply brick and mortar store to look at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
#4
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TDS Meter
Hi Gene,
I use a Hanna 9813 pH/EC/TDS meter ($171 Hummert 2003/2004) and have had great luck with it. I bought the $25 protective boot and the thing has lived in the greenhouse for years. It has been dropped, dripped on, and mistreated but still is a reliable work horse that always seems ready to go. Before this meter I used the DIST WP4 ($52 Hummert 2003/2004). I was not happy with this unit and replaced it although it still worked. Pat "Gene Schurg" wrote in message ... Recently, I visited a hydroponic supply brick and mortar store to look at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
#5
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TDS Meter
I use two,a PH pen and a EC us/cm (micro siemens) more accurate than TDS ppm
pen,i have had no problems and would recommend.They are also good value and do the job,i was going to get a Hanna test meter but the expense/replacement probes put me off. I got mine from a Ebay store in the UK.The EC meter is the same from this store= http://cgi.ebay.co.uk/Digital-Conduc...QQcmdZViewItem and the PH pen is similar Hope this helps in deciding . Thanks Keith "Pat Brennan" wrote in message g.com... Hi Gene, I use a Hanna 9813 pH/EC/TDS meter ($171 Hummert 2003/2004) and have had great luck with it. I bought the $25 protective boot and the thing has lived in the greenhouse for years. It has been dropped, dripped on, and mistreated but still is a reliable work horse that always seems ready to go. Before this meter I used the DIST WP4 ($52 Hummert 2003/2004). I was not happy with this unit and replaced it although it still worked. Pat "Gene Schurg" wrote in message ... Recently, I visited a hydroponic supply brick and mortar store to look at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
#6
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TDS Meter
Here is a link to a US ebay sellar with the same PH meter & EC meter as i
use, check out their store? http://cgi.ebay.co.uk/pH-Meter-for-H...QQcmdZViewItem Keith "keith kent" wrote in message ... I use two,a PH pen and a EC us/cm (micro siemens) more accurate than TDS ppm pen,i have had no problems and would recommend.They are also good value and do the job,i was going to get a Hanna test meter but the expense/replacement probes put me off. I got mine from a Ebay store in the UK.The EC meter is the same from this store= http://cgi.ebay.co.uk/Digital-Conduc...QQcmdZViewItem and the PH pen is similar Hope this helps in deciding . Thanks Keith "Pat Brennan" wrote in message g.com... Hi Gene, I use a Hanna 9813 pH/EC/TDS meter ($171 Hummert 2003/2004) and have had great luck with it. I bought the $25 protective boot and the thing has lived in the greenhouse for years. It has been dropped, dripped on, and mistreated but still is a reliable work horse that always seems ready to go. Before this meter I used the DIST WP4 ($52 Hummert 2003/2004). I was not happy with this unit and replaced it although it still worked. Pat "Gene Schurg" wrote in message ... Recently, I visited a hydroponic supply brick and mortar store to look at TDS meters. They had some from the low end to $150+. Some needed calibration (the cheaper ones) and some of the more expensive ones were self calibrating. What are others using and would you recommend it to another grower? Good Growing, Gene |
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