Hanna GroLine 1413 µS/cm Standard Sachets — 25 × 20 mL
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✓ In-store pickup available in Peabody, MA
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✓ Heavy soils & media are local pickup only
1413 µS/cm (1.41 mS/cm) conductivity standard in single-use sachets — the standard EC/TDS calibration point, portioned fresh for every use.
Single-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.

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