Average Reviews:
(More customer reviews)I have been using this unit for approx. a month now and so far I am impressed with this unit. Although I purchased this meter for my own personal use, I also work in a professional lab during the day. I compaired this units results with our $1500 meter in the lab and found that this unit is very close in accuracy. The statements about this unit being hard to calibrate are incorect. Having experience with several kinds of pro ph meters I can say with authority that this unit is as easy as it gets to calibrate. I would guess that the other folks here who had trouble probably had defective units. The calibration process is so simple that a person would be hard pressed to screw it up unless you didn't read the manual at all. One other nice feature of this unit is the two decimal point readout. The other units in this price range that are for sale here only have one decimal point display. example-- 7.XXvs. 7.XThis feature will be very helpful to anyone who is considering tight control of the solution you are working with. Remember, for every full point that your ph goes up or down your solution is 10 times more acidic or alkaline. example-- 7 vs. 8 ph. Therefore, with a unit that only reads out to one decimal place, for each number movement your solution is twice as acidic or alkaline example--7.1 vs. 7.2 ph and that isn't even taking into account the margin of inaccuracy in these consumer grade units. The only weakness I have found in this unit is that it has auto shut off and likes to turn itself off while I'm in the middle of a reading. The truth is that it is more of a plus than a minus. Considering that if you forget to turn this thing off, the next time you attempt to use it the batteries will be dead and that would be a much bigger pain in the butt than having to hit the power button once in a while, to say nothing of having to buy a new probe tip prematurely because all probe tips have a useful life based on time of use among other things. The other units in this range may be cheaper but the quality and feature designed into this unit make it worth the extra money.
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HM Digital Waterproof pH MeterProduct Description: Professional Waterproof pH/Temp MeterVery reliable waterproof pH meter measures with an accuracy: of +/- 0.02 pH. Measures pH and Temperature Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it's dried up Waterproof housing Simultaneous temperature display Measurement Range: 0-14 pH Digital Calibration (push button) Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The PH-200 meter is three-point factory calibrated to 4, 7, and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries, and lanyard
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