Luster Leaf® Rapitest® Electronic 4-Way Analyzer is a compact, portable meter designed to measure four essential indicators for plant growth: soil pH, soil moisture, sunlight, and combined N-P-K levels. It helps prevent scorching, overwatering, and overfertilizing while ensuring soil acidity or alkalinity is suitable for your plants. To use, insert the probe system into the soil and toggle between gauges to obtain instant readings. The unit is calibrated to USDA standards, requires no batteries, and includes guides for watering, light requirements, and soil pH preferences for over 400 plants.
Soil pH: Measures soil acidity and alkalinity to help determine if conditions are suitable for specific plants. Includes a logarithmic pH scale and guidance for adjusting soil pH levels.
Soil moisture: Indicates moisture levels at root level to help prevent over or under watering. Uses a probe design for improved contact with soil and more accurate readings.
Sunlight: Measures light exposure using a purple chromatic lens calibrated to Mean Solar Radiation standards, helping determine if plants are getting appropriate light.
Fertility (N-P-K): Checks combined Nitrogen, Phosphorus, and Potash levels based on USDA standards. Indicates if levels are too little, ideal, or too much, with fertilizer guidance.
