Aqua Master Calibration Solution pH 4.01 20ml Sachet X Nutrients It includes four hanging bars

It includes four hanging bars to support your grow equipment

It is constructed with aluminum flanges and a galvanized steel mesh

Advanced electrode technology

relative humidity 40-50%

Rice hulls are now available in smaller sizes for gardeners and small growers

Aqua Master Calibration Solution pH 4.01 20ml Sachet X Nutrients It includes four hanging barsDescription Aqua Master Calibration Solution pH 7. 00: This is a high quality calibration solution provided in a 20ml sachet. Package Content: The package offers a pH 4. 01 calibration solution. Each box includes 25 packs of 20ml each. Quality Standards: This solution is traceable to the NIST (National Institute of Standards and Technology) standard, ensuring its credibility and reliable performance. Storage Instructions: For optimal effectiveness,