For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges.
Features:
- 1000 ppm NaCl calibration solution
- Comes in a sealed packet.
- Sealed with a tamper-evident closure
-35%
HM Digital TDS 1000 ppm Calibration Solution, 20 ml
$2.62 Save:$2.00(35%)
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