Oakton (WD-35653-11) TDS 1413 Pouch (1000 PPM)
Standardized against NIST standards, premixed, and ready to use. Pouch contains a solution with a TDS of 1000 ppm used as a calibration solution. "Singles" are convenient for high-precision calibration on-the-go.
- Ideal for field calibration.
- NIST traceable materials.
- ±1% accuracy at 25°C.