Bút Kiểm Tra Độ Cứng Của Nước Trong Hồ Cá Tiện Dụng

Giới thiệu Bút Kiểm Tra Độ Cứng Của Nước Trong Hồ Cá Tiện Dụng

⭐Welcome to our store, we will provide you with the most satisfactory service! We offer a variety of high quality, low price sporting goods, outdoor products, health products, bicycle accessories, fishing gear etc, of course, also include some toys and musical instruments⭐
Decription:
Features:
TDS means Tatal dissolved solids,on behalf of impurities dissolved in water, the larger the value of TDS, indicating the content of impurities in the water, on the other hand, low impurity content.
The general conversion ratio between GH and TDS value of water hardness:
0-89ppm (s), strong soft water 0-4dh;
90-159ppm, soft 5-8dh;
160-229ppm 9-12dh, moderately hard water;
230-339ppm, moderate hard 13-18dh;
340-534ppm, water 19-30dh;
More than 535ppm, strong hard water above 30dh.
Included:
1 x TDS Testing Pen

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