Reviews Seawater Salinity Test Pen

Brake Fluid Tester Pen with 5 LED Indicators Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid

【What does it do?】 If the moisture content of the car's brake fluid is too high, it will cause the car's brakes to fail, so it is very necessary to have a brake fluid tester. You can check your brake fluid at any time..
【Application range】This brake fluid test pen supports most vehicles with DOT3 DOT4 car brake fluid, and can be used by professionals and individuals.(If you turn on the switch and all the lights are on, please remove the battery and restart).
【Easy to use】This brake fluid test pen has 5 LED indicators to show the water content in the brake fluid. Press the top button and immerse the probe in the brake fluid. After a few seconds, the LED will display the test result. The brake fluid test pen will automatically turn off after approximately 15 seconds of inactivity. (Without battery).
【Reminder】The probe of this brake fluid tester pen is made of high-precision metal material, and the test is accurate. If you need to repeatedly measure, you need to wipe the probe clean before measuring. After you have finished using it, please clean the body and probe of the test pen. This will extend the life of the test pen..
【Friendly service】 Our products are shipped from the US warehouse. If the product you received has any quality pr....

Multi-Function – Test Brix, Salinity, suitable for fruit and vegetable growers, maple syrup producers, home wine brewing hobbies. Used for food, fruit, beverage, coffee, wine, etc..
High Precision & Fast measurement — Accuracy ±0.1%, Resolution 0.05%, Meter Range 0-32%, to get the results within 2s..
Accurate Readings With ATC — Built with Automatic Temperature Compensation (ATC), FJD brix refractometer delivers accurate readings even if the measurements are in different temperatures (between 5°- 45°C)..
Waterproof & Durable — IP67 Design makes it possible for you to wash the refractometer with flowing water. Pretty durable to pass the 1.5M dropping test..
Portable FJDynamics Refractometer — Compact in size and light in weight, easy-to-read OLED screen, fast charging. It takes only 1 hour to be fully charged..

【7-in-1 pH meter with Bluetooth】Digital pool water tester professional measurement ORP Meter/S.G Meter/TDS Meter/Salinity Tester/PH Meter/EC Meter/Temp.Water tester multi-function one-key switching, which is more worry-free and convenient to use. Ph meter for water quality is widely used,can be used to test drinking water,fish tank,swimming pools,laboratory,in aquarium, spa, wine, beer,ect..
【pH Meter】The pH tester digital mainly detects the pH value of liquids.The ph tester can be applied to food, pet fish supplies or hydroponics aquaculture.Water that is too acidic or alkaline can adversely affect the health of humans or pet fish.The pH water tester can also be used for blood, saliva, sweat, urine,etc..
【Orp Meter】Pool chemical testing kit is a good helper for pool supplies.In addition to testing the ORP value in swimming pool water, pool water tester can also be used as a pool thermometer.The ORP value is a measure of the oxidative power or sterilization strength in water pool salt. The higher the ORP value in water, the stronger the oxidative power and sterilization ability..

...can quickly and easily diagnose whether the car's ignition system is working properly, avoid fire and burn out the ignition coil. This new high-pressure detector is very easy to use. If the ignition system is OK, the internal LED indicator will show you..
✿No need to disassemble: No need to disassemble any line to test the performance of the spark plug, high voltage wire and ignition coil. When the engine is started or running, place the end of the detection pen on the high voltage wire light-emitting tube..
✿High-quality materials: This ignition test pen is made of high-quality aluminum material, which makes the product have good durability and high quality. With durability and high quality. Very environmentally friendly, this material has a dense oxide film on the surface. This film prevents corrosion, so it is very durable..
✿Convenient and fast: This professional test pen is made according to production technology, providing a healthy and reliable troubleshooting method, convenient, economical and time-saving. The metal tip of this test pen makes the product easy to insert and rugged, making it your right choice. The slotted end of the test part makes the contact area between the wire and the instrument large, and the test is accurate.

... Adopts the digital screen display with backlight, multi-parameter display at the same time, mobile phone App control backlight display. If it is not used, it will shut down automatically after 10 minutes. oxygen solubility will be affected by temperature, atmospheric pressure, and salinity. our instrument with temperature compensation can meet normal use..

●Provide precise salinity reading. ●Easy in operation and salinity reading. ●Smooth water flow design prevents the attachment of fine bubbles to increase measurement accuracy..

Measures dissolved oxygen concentration/saturation, pH, mV, conductivity, TDS, salinity, resistivity and temperature.
Automatic salinity compensation and manual barometric pressure compensation for DO measurements.
One button pH calibration (4, 7, and 10pH).
Choice of 3 point pH calibration for better accuracy.