"This is a special order item and will not ship with the rest of your order. There will be additional shipping charges for this item. Please call us at 888-963-3888 for details on the estimated shipping cost and the ETA to receive this item."
M10030B calibration solution is formulated at 12.880 mS/cm, and is available in a box of 25@20 ml sachets. Calibration solution is essential for the correct operation of electrodes and for obtaining the most accurate and reproducible readings.