TDS EC Meter Temperature Tester pen 3 In1 Function Conductivity Water Quality Measurement Tool TDS&EC Tester 0-9990ppm 15%

ATC PH Test Pen Battery Model LR44 (No including the battery) Features: 1.Suitable for any aquarium industry, fishing industry, swimming pool, spa, school laboratory, food and beverage, drinking water, etc. 2.Lightweight, compact pH meter. Completely hidden in a bag or pocket for easy daily carrying. 3.Easy to use, remove the protective cap and immerse the pH meter electrode in the solution 4.Hand-held design, convenience Specification: Accuracy: 0.1 Operating Temperature: 0-50 degree centigrade Measuring Range: 0.00 ~ 14.00 The silver one: test water purity The yellow one: test water PH Package content 1pcs * PH tester (No including the battery)

TDS Tester CR2032 (No including the battery) Description: Lock function: makes it easy to read and record, press HOLD button then remove from test solution. 4 Display modes: press SHIFT button: TDS-ppm & ° C, EC-μs / cm & ° C, TDS-ppm & ° F, EC-μs / cm & ° F. 5 minute Auto Shut Off feature, so battery won't run down.  Measurement Range: Conductivity: 0-9990 μs / cm TDS: 0-9990 ppm (parts per million) Degrees Celsius: 0.1-80.0 ° C  Fahrenheit: 32.0-176.0 ° F  Accuracy: ± 2%  Net weight: 55g Battery: 1x3V CR2032 (No included)   Feature: Provides accurate and reliable test readings: 3-In-1 Digital TDS meter provides accurate readings for TDS (Total Dissolved Solids) EC (Electrical Conductivity) and temperature. Professional, Accurate, and Precise 3-in-1 TDS, EC, and Water Temperature Meter. The TDS meter has automatic temperature compensation in measurement mode. 9 minutes no operation, the meter will automatically shut down. Save power, extend battery life   Multi-mode conversion: TDS EC meter instrument a total of 4 different modes, press the SHIFT key can be converted between different modes. Mode memory function, each boot mode is the default mode used before the shutdown    Locks your reading making it easy to record: Large, easy to read LCD screen and data-hold function makes reading and recording a snap. “HOLD” automatic locking, “SHIFT” automatic conversion, 5 minutes Automatic locks. Press the SHIFT key while the value is locked to view the measurement results for the different modes. The measurement time is rapid, due to the exquisite naked type sensors, 5 seconds complete    Pocket Size: TDS meter is a professional water level test instrument, the operation is simple, the appearance of fashion, small size and easy to put in your pocket! For today's market volume is the smallest, lightest portable. Reasonable design, pen electrode can be directly inserted into the water solution, measured it. Compact size that enable you to take anywhere   Widely Use: Ideal for all water quality testing, water purification applications, waste water regulation, aqua culture, hydroponics, laboratory and scientific testing, pools, ecology testing, colloidal silver, water treatment and more.   Operation: 1: Remove the electrode protective cap before use 2: Press the ON / OFF button, and immerse the meter into the solution. (The solution should not over the immersion line) 3: After the numerical display is steady, press the HOLD button and take it out of the solution for checking the result 4: Wipe clean the electrode after using, turn off the meter and replace the protective cap   Package include: 1pcs x TDS Meter (No including the battery)

PH meter KT-3 ( No including the battery ) Features： 100% brand new and high quality Display: LCD Digital Accuracy: 0.01 Resolution: 0.01 Operating Temperature: 0~80°C Measuring Range: 0.00~14.00 Probe Type: Precision glass bulb electrode Calibration Method: 2 points automatic calibration Power Supply: 2*1.5V LR44 Batteries(Not included!!!) Size:155*29*16mm ATC automatic temperature compensation How to use 1. 1 bag 6.86 PH buffer powder needs 250ml water(Distiled water, Pure water, water with PH value neutral in room temperature), then shake it gentlly, then use the pen to test it. If it display 6.8, then the pen is good to use. 2. If not, please use the screw to calibrate it ( The hole in the back ) , until the valur is 6.8 3. If use 4.0 powder to calibrate, the test result need to be 4.0, and the pen need to stay in the water. Note The PH meter need to be recalibrated, when: 1. the PH meter has been used or placed for a long time 2. the PH meter has been used frequently 3. High accuracy is needed. Package content 1pcs * PH tester ( No including the battery )

TDS&EC Meter ( No including the battery ) Features: 1. 1 00% Brand new and high quality. 2. Hold function: Saves measurements for convenient reading and recording 3. Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries 4. Dual Range: Measures form 0-999ppm, with a resolution of 1ppm. From 1,000 to 9,990ppm, the resolution is 10ppm, indicated by drinking x 10image, Factory calibrated 5. This item can be used in: water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics. Specifications: 1. Rang: 0-9990ppm 2. Accuracy: +/-1.5% 3. Battery: 2 x 3V Button Cell battery ( battery not included ) 4. Item size:142mm x 23mm x 13mm Note: Do not drop the entire TDS meter in water of dip beyond the maximum immersion level. This unit is not water-tight and is not covered under the warranty if water enters the unit. Package Included: 1 x TDS Meter Tester ( No including the battery )