Diamond Tester, Gem Tester, Diamond Tester Portable LED Audio Diamond Tester Jewelry Gem Selection Precision Tool Test for Diamond for Beginners and Expert

  • 【Versatile】 The tester has a very compact design, ideal for buying jewelry, buying diamonds, selling real estate, auctions, etc. The g tones must be clean, dry and at room temperature..
  • 【Precise Diamond Tester】 This diamond tester has a very compact design and will help you tell the difference between a real diamond and a fake diamond..
  • 【LED display】 This tester is supplied with a PU housing and a small test platform for holding loose stones. LED light and audio result display. Easy calibration for stones of different sizes..
  • 【Easy to use】 Easy to use, even for beginners. The green indicator is shown when the stone is a real diamond. A continuous humming sound will be heard if the user accidentally touches metal rather than stone..
  • 【Portable design】 Diamond tester for a quick, precise and y diamond test. Thanks to lossless testing, the process is simple and precise. The tester is light, compact and easy to transport..
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VIVOSUN Digital PH Meter for Water, 0.05ph High Accuracy Pen Type PH Tester for Hydroponics, Household Drinking, Pool and Aquarium

  • AUTOMATIC CALIBRATION – Factory calibrated, but recalibration is needed in case of long period of inactivity or after a frequent use. pH 4.01/pH 6. 86/pH 9.18 calibration powders are included. Push the auto-calibration button, the tester will automatically identify the calibration solutions..
  • AUTOMATIC TEMPERATURE COMPENSATION – Thanks to the built-in automatic temperature compensation(ATC), our PH tester can accurately test pH value of the sample at any temperature in the range of 0℃- 50℃, no need to take care about the temperature of testing liquid..
  • FAST RESULTS & COMPACT SIZE – No more consuming paper strips or other inaccurate pH test chemicals, it only takes a few seconds for your result to appear on screen. The lightweight and portable size allows you to take it around easily in your pocket and do your measuring anywhere..
  • WIDELY USED - Ideal for home or laboratory uses. Can be used to test drinking water, swimming pools, PH balance in aquarium, hydroponics, bath tub, RO system, spa, wine, beer and any other liquids, or anywhere need to test PH value and get accurate data..
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TDS Meter Digital Water Tester, Tuecota TDS Tester 3-in-1 TDS Temperature and EC Meter, Ultrahigh Accuracy Water Quality Meter ppm Meter for Drinking Water, Aquariums, etc

  • ...er adopts upgraded agile titanium alloy electrode and industrial-grade high-precision chips. Remove the protective cover, press the switch button, immerse the electrode of the TDS tester in the solution, and you can get the reading immediately. Accuracy: ±2%, measuring range: 0-9999ppm, 0-9999 μS/cm..
  • 【Automatic Temperature Compensation】: The TDS meter has a built-in (ATC) automatic temperature compensation function, which can accurately determine the TDS & EC value of the sample within the range of 0.1-80.0℃ (32.0-176.0°F), so that the measurement data will not Affected by water temperature..
  • 【Auto-off and Hold Function】: The digital water tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient recording, and the tds water tester with big backlit LCD for easier reading..
  • 【Wide Use】: The lightweight and portable size of the TDS water meter allows you to easily carry it with you, and measure it anytime, anywhere. Test the purity of drinking water to ensure it's healthy, monitor if Reverse Osmosis (RO)/DI System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients) and pool etc..
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TDS Meter Digital Water Tester,WoEluone 3 in 1 TDS,Temperature and EC Meter,Accurate Ideal PPM Meter for Drinking Water, Aquariums,RO System and More

  • ...r equipped with low-power backlight technology to test water at night or in dark places easily. It can also be used to distinguish between drinking water and non-drinking water. Red backlight(ppm003e40) means this is non-drinking water..
  • ☑️ 【 ACCURATE AND WIDE MEASUREMENT RANGE】: The advanced 3 in1 (TDS, EC, Temperature) conductivity pen equipped with premium quality titanium alloy probe to achieve high accuracy, and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures. Testing range from 0-9990 ppm, the resolution is in increments of 1ppm,indicated by a blinking 'x10' image..
  • ☑️ 【TEST YOUR WATER PURITY】: With our slim and lightweight conductivity meters pen can test how pure is your water? Just stick it in about 1 inch deep of water, then TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million)..
  • ☑️ 【 EASY TO USE AND HANDY】: Just stick the TDS meter tester into the water of 1 inch deep, then stabilized readings will be auto-locked on LCD backlight screen in seconds, TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for co....
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CMTOOL Test Light Automotive Power Circuit Probe Tester with 4M Test Lead 6-24V DC Led Light Tester Fuse Tester 12V Wire Circuit Tester Auto 12 Volt Electrical System Tools Car Truck Circuit Test Pen

  • 1.【Portable Multifunctional Electrical Tester】The 4-meter extension cord is helpful for mobile maintenance work and is suitable for diagnostics of all 6V to 24V automotive electrical systems. The tester is made of ABS material, which is moisture-proof, high-temperature resistant, impact-resistant and has a longer service life. The tester also has an overload protection device, When the current exceeds 7A, the circuit breaker inside the device will automatically trip and give out a buzzer prompt..
  • 2.【Polarity Test and Continuity Test】The tester is made of insulating material and high-quality stainless steel, which can help you quickly identify the positive and negative polarity of the vehicle cable and plug. When the tester touches the positive pole, the LED should be red.
  • when it touches the negative pole, the LED should be GREEN. The electric circuit tester is also used to check the continuity of switches, relays, diodes, fuses, and circuits..
  • 3.【Component Activation and Testing】For professionals or car enthusiasts, this continuity tester is a great tool. The automotive short circuit tester can activate the components in/out of the vehicle's electr....
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KETOTEK Digital Water TDS Meter PH Meter PPM Tester has TDS-EC-Temp 3-in-1 and ±2% Accuracy PH Tester with 0-14.00PH and 0.01 Accuracy TDS PH Meters for Aquariums Water Hydroponics RO System

  • COST-EFFECTIVE PRODUCT PARTNER AND MORE WATER QUALITY INFORMATION CAN BE TESTED. It would be more economical and convenient than purchasing it....
  • WIDELY USED AND ACCURATE. Digital TDS meter has measurement range 0-9999ppm and ±2% accuracy, TDS meter can also test the liquid temperature in....
  • AUTO-OFF FUNCTION AND EASY TO USE. Digital TDS meter and digital PH meter both have the function of Auto-off, it will automatically shut off after 5....
  • AUTOMATIC TEMPERATURE COMPENSATION ( ATC ). Digital TDS tester and PH tester both have the function of ATC, the measuring data won’t be influenced....
  • SMALL SIZE AND POCKET PORTABLE. TDS tester and PH tester have small size and low weight as a pen, they are easy to be carried, and convenient for you....
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Digital PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium Water PH Tester Design with ATC

  • ✔HIGH ACCURACY: Ensure Your Pool, General Hydroponics Ph or Even Drinking Water Has a Perfect Ph Balance and Safe for Use with Tester Precision Ph Accuracy. Tester Has a Sensitive Electrode Sensor to Read Accurate Ph Levels. The Included Detailed Manual Will Show You How to Get the Best Accurate and Stable Reading.
  • ✔AUTO CALIBRATION: The Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder..
  • ✔AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C – 80°C (32°F – 176°F).
  • ✔WIDE USE: Ideal for Household or Laboratory Use, Suitable for Testing Ph Balance of Drinking Water, Pool, Aquarium, Ro System, Spa, or Hydroponics.
  • Appropriate for Wide Range of Applications.
  • ✔MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x PH meter, 1x user manual, 2x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders.
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Digital PH Meter, Water Quality Tester with 0-14ph Measurement Range, pH Meter 0.01 High Accuracy Pocket pH Tester, Suitable for Household Drinking Water, Aquarium, Swimming Pool, Hydroponics(1 Piece)

  • Easy to Use and Calibrate: Remove the protective cap and turn the meter by pressing the "ON/OFF" key, immerse the electrode in the solution to be tested, you can almost immediately get the pH test result of the water. As well, you can calibrate the tester with the button “CAL” using Buffer Powder..
  • Automatic Temperature Compensation: The pH meter can be adjusted automatically according to the water temperature and water quality, the tester can accurately test liquids which the temperature is range of 0°C - 60°C (32°F - 140°F). NOTICE: Its core functional part is a sensitive glass probe, which should be well protected and forbid with prolonged exposure to air..
  • Wide Use: The Pocket Size pH Meter, ideal tester for home and basic laboratory research uses. Suitable for testing the pH of drinking water, domestic food making (like wine, beer), swimming pools, aquariums, spas or hydroponics. It is definitely the perfect test kit for your daily life..
  • Package Includes: 1x PH Meter, 1x Carrying case, 2x 1.5V LR44 button cells(build-in), 3x pH buffer powder, 1x User's manual. The included detailed manual will show you how to get the best accurate and stable reading..
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Hanna Instruments HI98120 Waterproof ORP/Temperature Tester +/-1000mV ORP +/-2mV ORP Accuracy 1mV ORP Resolution

  • Compact oxygen reduction potential (ORP)/mV and temperature tester used in industrial applications.
  • Dual-level LCD display screen simultaneously shows the current measurement and the current temperature.
  • Replaceable electrode cartridge with an extendable cloth junction to extend meter life.
  • Waterproof, dustproof housing allows the tester to float.
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