Category : Home/FamilyOakton (WD-35653-10) TDS 447 Pouch (300 PPM) 20 pouches-boxPrice: USD33.40 Standardized against NIST standards, premixed, and ready to use. Pouch contains a solution with a TDS of 300 ppm used as a calibration solution. 'Singles' are convenient for high-precision calibration on-the-go.SpecificationsIdeal for field calibration.NIST traceable materials.±1% accuracy at 25°C. This item contains 20 individual pouches per boxOther products from IsoPure Water |