Best Detect Tube

API 3 Pack of Carbonate KH Test Kits for Fresh and Salt Water Aquariums

Helps detect stress on fish caused by rapid pH shifts, the result of low KH levels.
Contains color chart, clear instructions and glass tube(s).

Robinair's TruTrack Ultrasonic Leak Detector detects refrigeration leaks, pressurized gas leaks, vacuum leaks, dry nitrogen gas leaks, steam leaks, and more.
Versatile, 9V battery operated unit uses sound waves to quickly detect any leaking gas - under pressure or vacuum.
Allows you to identify potential failures in bearings, valves, solenoids, and other operational components.
Adjustable sensitivity with both audible and visual leak indication.
Comes complete with padded carrying case, headset, solid contact probe, flex tube, comprehensive instructions and 9V battery.
powered by one 9 volt battery (included).

【High Quality】: Brass nickel-plated shell, not easy to rust and fade. With 115CM high-quality copper wire, strong and durable, and excellent electrical conductivity..
【Sensitive Detection】: ABS material detection surface, the built-in intelligent sensing chip of the proximity switch can sensitively detect objects, when proximity switch is close to single target object, it will send control signal..
【Strong anti-interference】：TVS tube protection, strong anti-interference ability. Non-contact output, and long service life..
【Theory】: Output Type: NPN NO(Normal Open).
【Application】: It is a component widely used in automatic control industry for detecting, controlling, and contactless switching. It is Widely used in mechanical automation, 3D printing limit positioning, paper making, light industry for limiting station, orientation taking count, speeding trial etc..

It is applicable to non-metal outer wall, not necessary to directly contact with liquid, so that it can avoid liquid corrosion of strong acid or alkali, or the influence by scale or other impurities..
Intelligent liquid level benchmark adjustment and liquid level memory function. It can achieve multi-point serial connection and support NPN output..
Accurate and stable detection, it can detect boiling water liquid surface. With pure electronic structure and non-mechanical operation way, it has stable performance and long life..
High stability, high sensitivity, strong anti-interference capacity. it will not be affected by power frequency interference and common mode interference due to special disposals so as to compatible with 5-12V power adapter..
Strong compatibility, and it can penetrate into non-metal tube, such as plastic, glass, ceramic etc. Its sensing tube wall thickness can be up to 20mm and it is applicable to different shapes of container or tube level's liquid level detection..

Motion-only probe (the tube probe must be moving to detect a target).
Highly sensitive to iron with a large surface area, highly magnetic objects, and long objects buried vertically.
Target Response: Increasing Frequency and Volume.

...ears, defective valves, water pump failures, and other defective or damaged parts that cause odd noises and faulty operation.
SENSITIVE SOUND CHAMBER PINPOINTS SOURCE OF NOISE: This mechanic stethoscope car and motorcycle diagnostic tool features a sensitive sound chamber that amplifies sounds so that you can easily detect the issues within your engine.
EASY TO USE MECHANICS STETHOSCOPE: Thin diaphragm and extension probe pinpoints the source of the sound while the ear buds allow you to isolate outside noises so you can focus on detecting the issue.
Simply follow where the sound is the loudest in the motor and create contact between the probe and surface to confirm.
Check other places if unable to detect issue immediately.
BUILT TO LAST: Constructed of heavy-duty vinyl tubing and ABS plastic ends for strength, durability, and longevity.
Shockproof handles make work safe and secure.
Comfortable rubber ear buds isolate outside noises.
CONTENTS: This engine stethoscope set includes a medium probe and a long extension tube.
Two-piece probe extends to 11-3/4" to easily access in hard-to-reach spaces.

【Multi-Functional Tester】Our professional line finder can detect the condition of the cable buried in the wall or the ground, and judge whether it is interrupted or short-circuited. Detect accidentally covered outlets and power distribution outlets. The sensitivity of the receiver can be adjusted either manually or automatically. The transmitter has the function of self-inspection and both transmitter and receiver have a mute function..
【Built-in DC/AC Voltmeter】Transmitter built-in DC/AC voltage meter for linear measurement of 12-400V DC/AC voltage. The transmitter and receiver display power level, code, battery, detected voltage type and value, and high-voltage alert. Locate-determining which receptacles are on specific circuits track-pinpointing drill sites before drilling. Compact structure, strong and durable, convenient to carry with the storage bag included..
【Professional Wire Tracker】Electrical professionals often need to track cables or cabling systems, and often need to determine if the safety device is connected to a particular circuit, or to identify and track metal tube, heating pipe, or underground cable. This cable detector can help detecting interruptions and short-circuits in-floor heating.

American made LND 7317, Two-Inch Pancake GM Tube.
detects alpha, beta, gamma and x-radiation.
Scan items for radiation and detect Naturally Occurring Radioactive Materials (NORM).
Measurement Range 0.001 to 125 mR/hr (0.01 to 1,250 uSv/hr) with +/- 10 percent typical accuracy.
Monitors Elapsed Time, Average, Minimum and Maximum dose rate in uR/hr, mR/hr, uSv/hr, CPS or CPM.
internal data logging, timed measurements, dose rate alarm.

Contains one (1) API POND WIDE RANGE pH TEST KIT 160-Test Pond Water Test Kit, including 1 bottle of testing solution, 1 color card and 1 glass test tube with cap.
Helps monitor and adjust pH and prevent invisible water problems that can be harmful to fish.
Because different geographies have different tap water conditions, and different fish need different pH levels to be healthy, API helps measure pH levels & detect pH fluctuation caused by fish waste, uneaten food and addition of tap water..
Use for weekly monitoring and when water or fish problems appear.