The Greentest Mini ECO is a compact 3-in-1 analyzer designed to help you monitor the safety of your food and environment. This versatile device measures nitrate levels in produce from 0 to 9999 mg/kg, checks water hardness and TDS within a range of 0 to 999 ppm, and tracks background radiation from 0 to 9.99 µSv/h, including a cumulative dose tracker up to 999.99 µSv. Weighing only 30 g and measuring 100 × 30 × 18 mm, the white device fits easily in a pocket or bag for use during shopping or travel. It features a 60 × 128 pixel display and provides results in just 3 seconds with a measurement error of ≤ 10%. To keep track of your data, you can synchronize the analyzer with a smartphone app via Bluetooth. The internal 65 mAh Li-Ion battery offers up to 6 hours of usage and is recharged through a 5V USB power supply. It operates reliably in temperatures between 0 and 60 ℃, making it a practical tool for anyone wanting a quick, portable way to check the quality of their water and groceries.