pH Calibration Solution featuring three critical pH standards (00, 7.00, and 10.01) in 50 mL bottles for precise calibration of pH meters and enhanced measurement accuracy. ORP Testing Capability designed for oxidation reduction potential testing at 222 mV, delivering reliable readings for a range of scientific and industrial applications. Usage and Compatibility suitable for laboratories, educational institutions, and home use by gardening enthusiasts who want to monitor soil pH accurately. Specifications Standards: 00, 7.00, 10.01 Bottle size: 50 mL per bottle Kit contents: three standards for pH calibration and ORP measurement Use Scenarios In university or school laboratories for routine pH meter calibration and ORP measurements during experiments In industrial or research settings requiring stable, repeatable pH and ORP data for quality control At home by gardeners to test and adjust soil pH for healthier plants