An indispensable tool for your Koi pond. A salt bath done for disease prevention is usually done at a 0.3-0.7% ratio, but with this densitometer measurements of up to 0.01% are possible, making it both convenient and safe. [Digital salinity densitometer Specs] -Measuring range 0.01-1.00%?0.1-10ppt) -Analysis unit 0.01%?0.1ppt? -Measurement precision ±0.03%?±0.3ppt? -Measurement temp. 0-50? -Power source 1.5V button electric battery (LR-44) ×4 -Battery life more than 150 hours |