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virtually always fresh & no contamination risk
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Redox-Test Solution 470 mV@20°C, 500 ml
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Standard-Leitfähigkeitslösung 12880 µS/cm, 3.78L Kanister (Gallone)
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Calibration Solution 12880 µS/cm for Calibration, 500 ml
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Conductivity Solution 1413 µS/cm for Calibration, 500 ml
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EC Value @25°C 1413 µS/cm Size 500 mL Package 1 bottle FDA Bottle No Certificate of Analysis Yes
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Standard-TDS Calibration Solution 1382 ppm, 500 ml
HI4001-51 Ammonia Membrane Kit
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HI7030L - EC 12880 µS/cm@25°C - 500ml