Apera Instruments AI421 PH400S Portable Ph Meter Kit, 0.01 Ph Accuracy, -2.00 to 19.99 pH Range, GLP Data Management (500 Groups of Data Storage), USB Data Output, 1.3" Height, 3.4" Wide, 7" Length

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. ParameterModelsPH400SpHMeasuring Range(-2.00 to 19.99) pHResolution0.1/0.01 pHAccuracy±0.01 pH ±1 digitTemp. Compensation0 to 100˚C (32 to 212˚F) Auto or ManualmVMeasuring Range±1999 mVResolution1 mVAccuracy±0.1% F.S ±1 digitTemperatureMeasuring Range-10~110˚C (32 to 230˚F)Resolution0.1˚CAccuracy±0.5˚C±1 digitOthersData Storage500 groupsStorage ContentNumbering, Date, Time, Measurements, Unit, TemperatureData OutputUSB -- PC-Link SoftwarePower SupplyAA Batteries*4 (1.5V*4) / USBIP RatingIP57 Waterproof and DustproofDimensions and WeightMeter: (7.8*3.4*1.25) inches / 12 oz. With carrying case: (19.5*14.5*4) inches/3.6 pounds

• Comes with All-in-one ATC pH electrode, measuring pH and temperature simultaneously ( 0. 01 pH, -2 to 19. 99 pH)
• Advanced 1 to 5 points Auto. calibration with calibration guide and reminder
• GLP data management (500 Groups of data storage), PC software support, USB data export
• IP57 water-resistant, ideal for use in harsh environments
• The large backlit LCD displays pH and temperature simultaneously along with icons of Stable readings and Finished calibrations