The Hach Singlet 2771520 is a ready-to-use, single-use potassium chloride (KCl) conductivity standard solution designed for fast, accurate calibration of conductivity meters in pool, spa, aquatic facility, municipal water, and laboratory QA/QC applications. Each pack contains 20 individually sealed 20 mL foil pouches at a certified concentration of 12.88 mS/cm (±10% at 25°C), eliminating the preparation, storage, and contamination risks associated with bulk calibration solutions. The sealed foil packaging prevents air exposure and solution degradation between uses, ensuring every pouch delivers a fresh, reliable reference standard. Simply open a pouch, insert the electrode, calibrate, and discard — no measuring, diluting, or cleanup required. Compatible with Hach conductivity meters and most third-party conductivity and TDS meters.
- 12.88 mS/cm KCl Standard for Precise Calibration: Each pouch contains a certified 12.88 mS/cm potassium chloride conductivity standard solution (±10% at 25°C), providing a reliable reference point for accurate conductivity meter calibration across pool, spa, municipal water, and laboratory environments.
- Single-Use Sealed Foil Pouches — No Contamination Risk: Each 20 mL dose is individually sealed in a foil pouch that blocks air exposure and prevents contamination between uses, ensuring every calibration is performed with a fresh, uncompromised standard solution every time.
- Ready to Use — No Preparation Required: Pre-mixed and pre-measured at the correct concentration, each pouch requires zero dilution or mixing — simply open, insert the electrode, and calibrate, dramatically reducing preparation time and the risk of user error in the field or lab.
- Portable & Spill-Free for On-Site Use: The compact, sealed pouch format is easy to transport to pool facilities, waterparks, and field sites without risk of spillage — an ideal solution for pool service professionals and water quality technicians performing regular on-site conductivity checks.
- Compatible with Hach & Most Third-Party Conductivity Meters: Designed for use with the full Hach conductivity meter portfolio and compatible with most other conductivity and TDS meters, making it a versatile calibration solution for both dedicated Hach users and multi-brand instrument environments.
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