GroLine 5000 uS/cm Conductivity Standard Sachets, 20 mL (25 pcs.)

Ideal for hydroponics, aquaponics, greenhouses, or field calibration, these GroLine sachets offer precise, portable conductivity standards. Each of the 25 single-use, pre-measured 20 mL packets delivers a high-quality 5000 µS/cm solution. Made to high analytical standards, they’re prepared with NIST-traceable KCl and delivered with a Certificate of Analysis. The foil sachets block light to maintain freshness and are free of dyes to protect sensor junctions. Each packet is clearly labeled with a lot number and expiration date. Compact and lightweight, they fit easily into kits or pockets, giving consistent performance wherever you go.