Filter Lifespan: Varies by usage — replacement filters sold separately

fish health)

The HI707-25 are high-quality reagents that are pre-measured

Households on fluoridated municipal water supplies

01 mS/cm EC Accuracy @25°C/77°F ±2% F

GroLine 5000 uS/cm Conductivity Standard Sachets, 20 mL (10 -Packs) NIST traceable conductivity standard Filter Lifespan: Varies by usageHI70039 10 packs is a high quality 5000 uS cm conductivity standard designed with hydroponics, aquaponics, and greenhouses in mind. Single use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on the go testing, fitting easily into your pocket or carrying case. Supplied with Certificate of Analysis Single use sachets for convenience. Perfect for use with GroLine testers and portable