Handheld digital acidity meter, the introduction of advanced technology and the use of imported components, greatly reduce the volume, reduce the cost, maintain the original good quality, so that the use of the acidity meter has been popularized. Pocket digital pH meter is a classic brand of pocket digital pH meter, which is popular all over the world with high stability, high reliability, easy operation and low price, and is favored by the majority of users. This digital pen style pH meter is an ideal instrument for aquarium, fishing industry, swimming pool, school laboratory, food and beverage. Main specifications: