1500 ppm NaCl

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TDS Calibration Solution

How accurate are your test results? General Hydroponics TDS Calibration Solution is for conductivity meters measuring 1500 ppm. Easy to use, just dip the sensor into a small amount of the buffer and adjust. Do NOT reuse.

ALL General Hydroponics solutions are of the highest quality, allowing growers to calibrate many popular brands of meters/ monitors (NaCl scale or the 442 scale).

Available size: Quart (32 oz)