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or low intensity light
One quart makes about 21 gallons of finished spray
Autopilot Desktop CO2 Monitor and Data Logger
It supplies up to 1500 ppm depending on room size and ventilation
Myron L Ultrapen PT2 pH & Temperature Pen Grommets or low intensity lightThe Myron L Ultrapen PT2 pH & Temperature Pen is designed to be extremely accurate, fast and simple to use in diverse water quality applications. Advanced features include automatic temperature compensation; highly stable microprocessor based circuitry; user intuitive design; and waterproof housing. A true one handed instrument, the PT2 is easy to calibrate and easy to use. To take a measurement, you simply push a button then dip the pen in solution.
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