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Extech DO700 Portable Dissolved Oxygen Meter

  • 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.
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Professional Handheld Alcohol 0‑80% Test Refractometer， Tester Meter Measure Instrument

  • A professional measure instrument to test alcohol concentration of liquor.
  • It's automatic temperature compensation is 0‑30℃.
  • Accurate test result, 0~80% concentration measure range, 1% minimum scale.
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VIVOSUN TDS Tester 3-in-1 TDS EC & Temperature Meter Ultrahigh Accuracy Digital Water Quality TDS Tester Blue

  • Multi-functional: Provides accurate and reliable test readings.
  • 3-in-1 digital tds meter provides accurate readings for TDS (total dissolved solids)....
  • Useful Tool: Saves you money while protecting your health.
  • Home water test kit alerts you when it’s time to change filters to remove contaminants....
  • Easy to Use: Locks your reading making it easy to record.
  • Large, easy to read LCD screen and data-hold function makes reading and recording a snap.
  • Long Battery Life: Auto-off function saves on battery usage and our TDS meter has lower power consumption than HM TDS meter.
  • Measurement Range: 0-9990ppm, 0-9990µs/cm.
  • Accuracy: ± 2%, 0.1- 80.0°C, 32.0-176.0°F..
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Thermocouple Thermometer Digital K Type Thermometer with 4 Thermocouples, -328~2500℉ Measuring Range HVAC Thermometer Dual Channels Temperature Meter Gauge with LED Backlight & ADJ Compensation

  • ✅ 【Wide Measurement Range】The main unit measuring range is: -328~2501℉(-200~1372℃).
  • Range of K type thermocouple(Stainless Steel):-58~1292℉(-50~700°C).
  • Bead-type thermocouple(blue):-4~392℉(-20~200°C).
  • ✅【Multi-Functional】: HD large screen display, ℉/℃ and K/J switchable, Max/Min/Average, Data Hold, Auto power-off function(can be cancelled manually).
  • ✅【Differential Temperature】Long press T1-T2 or T2-T1, and find the difference temperature value between T1&T2 testing samples easily..
  • ✅【Hi/Low Flash Alarm】Manually set the upper and lower alarm thresholds. The red backlight of the screen will flash when the testing value is higher or lower than the set thresholds..
  • ✅【ADJ compensation】Long press Hi and Low button together, adjust the ADJ compensation value to complete the calibration procedure, ADJ compensation range: -9~9℃..
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Juried Engineering TL072IP TL072 Dual Low-Noise JFET-Input Operational Amplifier Op Amp Breadboard-Friendly IC DIP-8 (1 Piece)

  • Wide Common-Mode and Differential Voltage Ranges, Low Input Bias and Offset Currents.
  • Output Short-Circuit Protection, Low Total Harmonic Distortion: 0.003% (Typical), Low Noise Vn = 18 nV/√Hz (Typical) at f = 1 kHz.
  • High-Input Impedance: JFET Input Stage, Internal Frequency Compensation, Latch-Up-Free Operation.
  • High Slew Rate: 13 V/µs (Typical), Common-Mode Input Voltage Range Includes VCC+, Example Applications: Motor Integrated Systems: UPS, Drives and Control Solutions: AC Inverter and VF Drives, Renewables: Solar Inverters, Pro Audio Mixers, DLP Front Projection System, Oscilloscopes.
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Agatige Brass Water Flow Sensor Switch, Electromagnetic Liquid Flowmeter Counter Industrial Accessory with 1/2-inch Interface

  • A professional measure instrument to test alcohol concentration of liquor.
  • Accurate test result, 0~80% concentration measure range, 1% minimum scale.
  • It's automatic temperature compensation is 0‑30℃.
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Oakton AO-35423-01 EcoTestr pH 2+ Pocket pH Meter 1 pack

  • 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..
  • FAST AND HIGH ACCURACY: Our Digital PH Meter can 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..
  • 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 DegreeC - 80 DegreeC (32 DegreeF - 176 DegreeF)..
  • WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses.Suitable for testing the pH of drinking water, swimming pools, aquariums, reverse osmosis systems, spas or hydroponics.
  • ideal for testing water, swimming pools, aquariums, spas, hydroponics, food, wine and beer, etc..
  • MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x PH meter, ....
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35mm Reloadable Waterproof Film Camera for Snorkeling, Manual Exposure, Without Film，Reusable，Easy to Use（Purple）

  • It will come with Camera, Manual and hand strap. Requires 2 AA (NO Batteries included).
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Fujifilm Instax MINI 7s White Instant Film Camera (Renewed)

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product comes with a 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com.
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