The HI981030 GroLine Soil pH Tester is designed to directly measure soil pH for environmental, agricultural testing. ±0.05 pH accuracy Specialized e ... WhatsApp me if you interested https://m.envirolab.com.my/index.php?ws=showproducts&products_id=4669968

The HI9814 is a slim, lightweight, waterproof, portable meter that measures  the pH, conductivity (EC), total dissolved solids (TDS), and temper ... WhatsApp me if you interested https://m.envirolab.com.my/index.php?ws=showproducts&products_id=4670023