Simply the most reliable pocket pH tester with the best value for general-purpose pH testing e.g. hydroponics, horticulture, pools and spas, water treatment, beverage making, education, environmental monitoring, etc. 
Auto. recognition and indication of stable values improves repeatability, saving you the trouble of guessing when to manually hold measurement. 
PH20 comes with a complete kit of premixed calibration solutions (4. 00 and 7. 00), 4 AAA batteries, and a lanyard all in a portable carrying case. 
Smart Self-diagnosis, warning of incorrect buffer solutions and incorrect calibrations. 
IP67 water-resistant. 
Up to 2000 hours' operation powered by AAA alkaline batteries. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system.
Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
Warranty: Two-Year limited warranty for the instrument, Six-Month limited warranty for the electrode(s).

PH20 Value Pocket pH Tester Kit

1. pH Range: 0 to 14.0 pH

Resolution: 0.1 pH

Accuracy: ±0.1 pH

Calibration Points: Automatic 1 to 3 points

Temperature Compensation: Auto Temperature Compensation 0 to 50°C (32 to 122°F)

2. Temp. Range: 0 to 50°C (32 to 122°F)

Resolution: 0.1°C

Accuracy: ±0.5°C

3. LCD: 180° Viewing Angle LCD

4. Stable Reading Indication: Smiley Face icon

5. Low-Battery Warning: Battery icon flashing, reminder of battery replacement

6. Self-Diagnosis: Yes

7. Heads-Up Function: No

8. Auto. Power-Off: Yes, auto power-off in 8 minutes without operation

9. Waterproof Rating: IP67; Floatable

10. Power: DC3V, AAA batteries*4

11. Battery Life: Continuous operation up to 2000 hours

12: Dimensions& Weight

Tester: (40*31*178) mm/ 107g With case_(190*165*40) mm/ 438g

Application	Regular water solution testing, such as pools and spas, hydroponics, tap water, drinking water, water treatment, aquaculture, cooling towers, etc.
Shape of glass membrane	Bulb
Replaceable	No
Temperature sensor	Yes
Junction	Single Junction Ceramic
Reference Eelctrode	Ag/AgCl
Electrolyte	KCL Gel
Range	0 to 14 pH
Temperature Range	0 to 50°C (32 to 122°F)

PH20 Pocket Tester

PH4.00 Calibration Solution (2oz)

PH7.00 Calibration Solution (2oz)

Lanyard

Carrying Case

Using Manual
We warrant this instrument to be free from defects in material and workmanship and agree to repair or replace free of charge, at option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to responsibility of APERA INSTRUMENTS, LLC for a period of TWO YEARS for the instrument and SIX MONTHS for the probe from the delivery.
This limited warranty does NOT cover any issues due to:

Accidental damage

Improper use

Normal wear and tear

Transportation

Storage

Failure to follow the product instructions

Unauthorized maintenance, modifications, combination or use with any products, materials, processes, systems or other matter

Unauthorized repair

External causes such as accidents, abuse, or other actions or events beyond our reasonable control.