Hanna Hl7032L TDS Solution 1382mg L PPM 500ml

This 1,382 mg/L (ppm) TDS calibration solution that is prepared against a NIST traceable potassium chloride solution. Hanna test solutions have the expiration date and lot number noted on the label and has an air tight tamper-proof seal to ensure the quality of the solution. Hanna’s line of TDS solutions expire 5 years from the date of manufacture for an unopened bottle.