【Feature】Equipped with an extended composite electrode with screw connection, suitable for direct measurement in small diameter containers. 【Usage】The digital soil PH meter is suitable for aquariums, aquaculture, hatchery, food processing, laboratories, paper industry, swimming pools and schools. 【Design】PH meter with high precision and fast response, easy to use. Compact and lightweight design, easy to carry. 【Screen】The LCD screen displays the pH value and is easy to read in seconds.