- Joined
- Nov 6, 2007
- Messages
- 13,957
- Location
- North Oxfordshire
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- His - Denim Blue A220 AMG Line Premium / Hers - Obsidian Black R172 SLK55
No worries. You use a calibration fluid, such as this:How do you know & how inaccurate would a cheap one be? Not fighting just want to know.
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HM Digital TDS and EC Calibration Solution 342ppm
For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. NaCl calibration solution at 342 ppm Comes in lightweight HDPE plastic bottles Sealed with a coated foam liner Shelf life after opening, following recommended...
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