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Your cart is empty. The Apera Instruments ph400s provides reliable pH measurements with various intelligent functions and a durable structure. Equipped with apera’s 201t-s 3-in-1 pH electrode, the meter tests pH and temperature simultaneously in a quick and accurate manner. Also tests ORP (oxidation-reduction potential), ORP electrode is sold separately. Accuracy: ±0.01 pH/0.1 percent F.S; range: -2.00 to 19.99 pH. 0 to 100˚c auto or manual temperature compensation. Intelligent functions: quick & easy 1 to 5 points auto calibration with calibration guide and reminder. The SMART self-diagnosis helps you conduct proper calibrations and determine the condition of your probes. Glp data management (500 groups of data storage), USB data output and power supply with PC software support. Timing data logging and purified/ammonia-added purified water measuring modes available. The large white backlit LCD displays pH and temperature simultaneously along with icons of stable readings and finished calibrations. Reliable structure: IP57 waterproof and Dustproof, ideal for use in harsh environments. It comes with a complete Test Kit including a meter, a pH electrode, a USB cable, and 3 bottles of calibration solutions (pH 4.00, 7.00, 10.01) all in a rugged carrying case. Powered by AA batteries. The product is CE certified. Notes: this product will not give accurate or stable readings for distilled or deionized water's pH testing. This is because distilled and deionized water do not have enough ions present for the electrode to function properly. To measure distilled or deionized water’s pH, users need to use a specialized pH electrode. Do not store the probe in distilled water or deionized water because they will cause damage to the glass membrane of the pH probe. Only use distilled water for cleaning the pH probe.
Parameter
Models
PH400S
pH
Measuring Range
(-2.00 to 19.99) pH
Resolution
0.1/0.01 pH
Accuracy
±0.01 pH ±1 digit
Temp. Compensation
0 to 100˚C (32 to 212˚F) Auto or Manual
mV
Measuring Range
±1999 mV
Resolution
1 mV
Accuracy
±0.1% F.S ±1 digit
Temperature
Measuring Range
-10~110˚C (32 to 230˚F)
Resolution
0.1˚C
Accuracy
±0.5˚C±1 digit
Others
Data Storage
500 groups
Storage Content
Numbering, Date, Time, Measurements, Unit, Temperature
Data Output
USB -- PC-Link Software
Power Supply
AA Batteries*4 (1.5V*4) / USB
IP Rating
IP57 Waterproof and Dustproof
Dimensions and Weight
Meter: (7.8*3.4*1.25) inches / 12 oz.
With carrying case: (19.5*14.5*4) inches/3.6 pounds
HUYNH TAN NHUT
Reviewed in Japan on February 26, 2024
ok
JKB
Reviewed in the United States on July 5, 2021
Simply the worst pH meter that I have ever encountered. Nothing is simple. You cannot turn it off by hitting the power button alone. You need to hit two separate keys in order to turn it off. The directions are 28 pages long. That should tell you something. Calibration requires that you choose the 7.0 ph standard "first". If you do not good luck.
Chris G
Reviewed in the United States on March 17, 2021
Nice case came with it.
Rooooo
Reviewed in the United States on January 29, 2020
Great combo meter
The reviewer
Reviewed in the United States on April 24, 2020
Like everything about it, its fast reliable and accurate!! I use it for water adjusting water ph. - Edgar E
Legoceros
Reviewed in the United States on June 6, 2019
I bought the pH400S to monitor the pH and ORP of my pool. I like its ability to record data over extended periods, which allows me to measure chlorine demand periodically. I hope the device lasts. I'll update my review if it breaks down prematurely, but I'm optimistic it won't.
Aziz-review
Reviewed in the United States on October 27, 2019
The instrument worked well for finding the Ph levels it was accurate, however the TDS was way off, the result was wrong, I compared it with other machines that I had. That said My machine was new, I made the tests on the first day, and because of the wrong results I returned the instrument.
Gary L.
Reviewed in the United States on June 10, 2018
ok
DF3364
Reviewed in the United States on May 19, 2017
Works as expected.
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