Oakton 35653-09 Conductivity Calibration Pouch, 10 uS - 20 pcs.

Single-use 20-mL pouches are sealed to ensure freshness-take these convenient standard solutions anywhere! Don't worry about transferring solution into another container-calibrate directly from the pouch.

A µS-to-ppm conversion table is printed on each pack for quick reference.

Features:

• Tear off a corner, or the entire top-opens wide enough for all probe types
• Notched corners for easy opening from either side