We recently purchased a waterproof pH tester for our water treatment facility and are extremely pleased with its performance .This industrial and scientific device is reliable and has shown consistent results in our substance analysis. Based on our own experience, we appreciate the easy calibration process and the durability of the product. The only con we could find is that the display may be difficult to read in direct sunlight. Overall we highly recommend this premium pH tester for anyone in the water treatment industry..
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