HM Digital 1000ppm TDS and EC Calibration Solution-3oz

This PPM calibration solution by HM Digital is a must-have for hydroponic enthusiasts. It comes in a 3 oz bottle and has a concentration of 1000ppm.

The calibration solution is specifically designed for calibrating PPM-TDS meters and pens. The brand is well-known for its high-quality hydroponic products, and this solution is no exception. Use it to ensure accurate readings and optimal nutrient uptake for your plants.