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Dissolved Oxygen Meter, Professional Digital Pen Type Dissolved Oxygen Test, 0.0-40.0mg/L Dissolved Oxygen Detector for for Aquarium, Aquaculture

• 【Accurate And Stable】With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40℃, and the reading is accurate and stable.
• 【Pen Type Dissolved Oxygen Meter】Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water.

Fishawk Dissolved Oxygen Meter, Professional Digital Dissolved Oxygen Do Meter, Portable Water Quality Tester for Aquaculture Fish Pond, Handheld Smart Meter, 0-20mg/L, ±0.3 Mg/L

• Dissolved oxygen detector, adopts a plastic shell, which is durable and corrosion‑resistant.
• Equipped with dots type backlit LCD display, easy to measure and use.

Dissolved Oxygen Meter, 0.0‑40.0mg/L Resolution Portable Professional Digital Manual Water Quality Tester Economy Pocket DO Temperature Tester Pen with Backlight Screen for Labs, Marine Aquaculture

DO9100 Portable Dissolved Oxygen Meter, 0.0-40.0mg/L, Support Single Point or 2 Point Automatic Calibration, Digital Display DO Meter Water Quality Monitor with Temperature Detector(Standard)

• [ACCURACY INSTRUMENT] DO9100 is an accuracy instrument for measuring dissolved oxygen and temperature. With built in microcomputer processor to calculate and compensate all measurement data related to dissolved oxygen and temperature.
• [PROBE] A membrane with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode and allows oxygen to pass through the membrane to react.

Extech RE300 ExStik ORP Meter

• Measures ORP/Redox from -999 to 999mV
• Automatic electronic self calibration

Extech RE305 ORP ExStik Electrode Module

• Easy to clean, rugged flat surface pH electrode
• Interchangeable with ExStik Chlorine or ORP meters

YINMIK Dissolved Oxygen Test Kit Accessories 1 * 50ml Zero Oxygen Calibration Reagent 2 * 30ml Electrolyte Filling Solution and 6 pcs Membrane Groups for DO Meter Tester

• {Professional Accessories Suitable for Dissolved Oxygen Meter}: YINMIK dissolved oxygen test kit includes 6 pcs dissolved oxygen membranes, 2 bottles of 30ml electrolyte filling solution, and 1 bottle of 50ml zero oxygen water calibration solution. There is no need to worry about your DO testers can't work properly because the missing accessories. It is simple to use, even if you are a beginner, you can operate it easily.
• {Polarographic Dissolved Oxygen Electrolyte Solution}:Regular replacement of the electrolyte will extend the service life of dissolved oxygen meter. The electrolyte filling solution is equipped for the polarographic dissolved oxygen probe of the handheld DO meter. Have the correct electrolyte solution is crucial to the performance of the dissolved oxygen probe. YINMIK dissolved oxygen test kit includes 2*30ml electrolyte, which can be used right out of the box, saving you the trouble and time .

Multicolor Acrylic LZQ-4 0.5-5LPM Oxygen Air Gas Flowmeter with Control Valve for Oxygen Adjustable

• Material: Acrylic + plastic + metal
• .It can be used in industrial situations, oxygen bar and hospitals need to calculate the gas flow

Sealey S0639 Extra Long Hex Key Set, 10 Pieces

• Jumbo keys suitable for industrial and agricultural applications
• Contents: 3, 4, 5, 5.5, 7, 8, 10, 12, 14, 17mm

Extech Instruments CL205 ExStik Chlorine Electrode Module for Extech CL200 Meter

• Easy to clean, rugged flat surface chlorine electrode
• Measures chlorine and temperature

GuDoQi PH Meter, TDS Meter Combo, Pool Water Test Kit, PH Tester Digital, PPM Meter, 0.01 Resolution TDS PH EC Temperature 4 in 1 Set for Drinking Water, Hydroponics, RO System, Aquarium, Swimming

• Easy to Use: TDS meter will lock the measure result when you press the "HOLD" button and automatically turn off after several minutes of non-use. PH meter has auto calibration function and you can get readout quickly
• Accurate and Reliable: PH resolution is 0.01pH,accuracy ±0.01pH. TDS meter rang 0~9999ppm, Conductivity 0~9999 us/cm, accuracy ±2%. TDS 0~9999ppm

YINMIK Digital pH Meter with Extra Replaceable Probe, Pocket pH Tester for Hydroponics, Accurate Water Tester for Swimming Pool Hot Tub Aquariums Home Wine Brewing

• [Buy One Get One Free as Bonus] An additional probe of YINMIK YK-2 pH Meter is included in the package in case the original one is accidentally damaged. With one calibration for the replacement, you can have a brand-new pH tester again. Greatly extend the life of the tester
• [More Accurate & Faster] With low impedance, YINMIK pH sensor ensures the probe high response rate. Premium temperature sensor makes the temperature compensation (ATC) fast and accurate. Never worry about waiting too long for the correct reading

INFURIDER Digital Sound Level Meter,YF-882A Decibel Meter Noise Volume Monitoring Device Measures Range 30-130dB(A/C) with Max Data Hold Backlight and Fast/Slow Mode

• 🔷【Accurate Decibel Meter】The digital noise level meter measures range from 30-130dBA/30-130dBC.Frequency range at 31.5Hz-8.5KHz with an accuracy of +/-1.5dB.Resolution:0.1dB.
• 🔷【A/C Double Weighting】This sound level meter also has both A and C weighted dB measurements. dBA can measure environmental noise and dBc is suitable for mechanical noise,it can be converted to A/C for more precise measurement.

VIVOSUN Digital PH Meter for Water, 0.05ph High Accuracy Pen Type PH Tester for Hydroponics, Household Drinking, Pool and Aquarium

• Application: Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics
• Easy Calibration: Advanced technology makes the test result fast and accurate; LCD screen makes reading clearly

Mengshen Digital Sound Level Meter, Handheld Audio Noise Meter Tester with LCD Display Measuring 30-130dB (9V Battery Included)

• [Sensitive Sensor] 0.5s response time, no contact. Can measure noise level under any circumstances, quickly display accurate measurement result.
• [LCD Display] Large clear LCD backlight display, easy for reading enen during night. Low radiation, reduce the damage to the eyes.

hi99161 – phmetro Notebook Watertight for Food Use, Complete Of Electrode pH FC 202d, Calibration Solutions and Cleaning Electrode Multi-Level, New Casing, with LCD

Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" inch Microphone, Professional Noise Decibel Calibration Tool Measurement (Digital Calibrator 94dB & 114dB with LCD)

• Two output levels of 94dB and 114dB with Output frequency of 1000±0.1%Hz (allows calibration with A,B,C or D weighting networks or linear)
• Fits ½ inch and 1 inch microphones (includes ½ inch adapter)

Hanna Instruments HI-98103 Checker pH Tester with pH Electrode and Batteries, 0.00 to 14.00 pH, -0.2 pH Accuracy, 0.01 pH Resolution

• Extend the life of your Hanna pH Checker with a replaceable electrode
• Automatic calibration for accurate pH readings every time

PH METER HI-98107 By HANNA INSTRUMENTS & Best Price Square

• Non-clogging fiber junction and replaceable electrode to prolong life of the meter
• Two-point manual calibration for ease of use

OUHUAN 5 in 1 Digital PH Meter for PH/TDS/EC/Salinity/Temp, with Simultaneous Data Visualization, for Culture, Test ' Drinking

• This advanced quality meter enables simultaneous measurement of pH, TDS (, ppt), EC (us/cm, /cm), salinity and temperature, giving users prior convenience and time-saving benefits.
• This pH tester boasts a sensitive probe, a high-sensitivity glass probe and a 32-bit industrial-grade super chip design, ensuring better measurement stability, precision and probe life. In addition, the automatic temperature compensation (ATC) function ensures precise measurements in a wide temperature range of 32 to 140˚F (0-60°C), minimizing errors caused by temperature fluctuations in the liquid.

YINMIK Food pH Meter with Extra Replaceable Probe for Sourdough and Bread, pH Tester for Fermented Sausages and Salami, Easy pH Measurement of Cosmetics, Cheese, Semi-Solid Samples

• √ Buy One Get One More Free Gift: YINMIK YK-2S pH Tester come with an extra new pH probe, which not only save money ,but also save time. in case the original one is accidentally damaged. With one calibration for the replacement, you can have a brand-new pH tester again. Greatly extend the life of the meter.
• √ Stable, Accurate and Durable: More chips for more stable reading, with two times quantity than other products, there is no need to worry about the reading all over the place. Built with ATC system, whether it's a hot summer day or a cold winter day, you'll always get accurate measurements. What's more exciting is that the protective cap of the tester contains a wet sponge soaked in KCL solution, making the spear probe always moist, and that gives the tester more durable life.

Irfora PH Meter Calibration Point 3 Type PH Buffer Powder Set Measure Calibration Solution Powder For PH Test Meter

• This calibration buffer powder for PH meter is Individual sized PH buffer packets that can be tucked in der, bag or suitcase for travel.
• Easy to use: open the packet mix the powder with 250ML distilled water.

HAMON 5 in 1 PH Meter, PH Tester for Water Tds Meter Tec/PH&temp PH Pen Digital PH Tester High Accuracy PHTester Pen Water Quality Tester PH Range 0-14PH

• 【High Accuracy】The numbers on the ph tester pen pH Range 1.00 to 14.00,while the numbers on the digital EC and TDS PH meter range from 0 to 19 990 ppm. And this LCD conductivity meter has the accuracy of 0.1.
• 【5 in 1 PH /TDS/ EC /ORP& TEMP PH Tester】 This pocket ph tester is designed in 5 in 1 format, the quality of liquids such as drinking water, aquariums, swimming pools, spas, well water, etc. Indoors or on vacation testing the water safety of everyday life can be guaranteed.

Fdit PH Probe Sensor, PH Electrode Sensor Meter BNC Type Connector 201H High Accuracy Laboratory Compound Replacement (2M)

• 【Reliable Replacement】This probe can be used as a replacement part of the PH meter to replace the damaged original parts and prolong the service life. It is sturdy and durable, economical and practical, fully meeting the needs of various industry tests, and suitable for various PH Q9 BNC plugs.
• 【High Accuracy】This PH electrode is a high accuracy composite laboratory electrode with accurate measurement and wide measuring range. Can be used for general water applications such as drinking, domestic and rainwater, aquariums, tanks, ponds, pools, spas, etc.

2 in 1 Digital PH Meter, Smart Bluetooth PH Temp Tester Pen Food PH Pocket Tester Kit for Baby Food, Water, Bread Dough, Water Quality Tester for Drinking, Cosmetics, Soil

• 🥩PH meter with Bluetooth----the PH meter connects to your phone or tablet in seconds and allows you to get all your readings in one view. It makes testing more accurate and convenient. The PH meter is suitable for testing the pH of solid and soft samples with high accuracy, such as cheese, sushi rice, meat, fruit, pasta, jam, sauce, skin care products, solid media, etc., and also for routine testing of the pH of a solution.
• 🥩Automatic Calibration pH Tester---Thanks to the high-sensitivity glass probe, a full measurement range of 0-14pH can be achieved, with a resolution of 0.01 pH. The pH meter uses a 3-point calibration method to calibrate the electrode to solutions of pH 4.00, pH 6.86, pH 9.18 or pH7.00 pH4.00 pH10.01. Calibration can be carried out effortlessly to ensure measurement accuracy.

7 in 1 PH/TDS/EC/ORP/S.G/Salinity/Temperature Multi-Parameter Pocket Water Quality Tester with Electrode Replaceable C-600 PH Meter for Pools Drinking Water Aquariums

• It can measure PH // EC / ORP / S.G/seawater specific gravity / temperature. The measurement range is large and wide and can measure freshwater salinity and sea salt.
• This product can detect the salinity of edible salt. At the same time, it can detect the salinity of seawater. Food salinity measuring range: 0.00-25.00%, seawater salinity measuring range: 10.1-200.0ppt.

Digital PH Tester, LCD Display Bluetooth PH Meter for Cheese for Cosmetics

• Wireless Connectivity: The pH meter connects to your phone or tablet in seconds and you can get all your readings in one view. It makes testing more accurate and convenient.
• Simpler and More Convenient Operation: Immerse the tester electrodes in water and wait a few seconds to get data on the LCD screen. No need to match colors one by one like test strips.

PH Electrode Probe, PH Probe Easy To Use For Food Home Use Measuring Industry

• The PH electrode probe is accurate and reliable that can gives almost instantaneous readings.
• This detection PH sensor probe is sensitive and the PH value test is accurate.

Water Quality Tester,5in1 Multifunctional Portable PH Salinity Tem TDS EC Digital Water Quality Tester Monitor Meter Pen

• Clear and Readable : Adopts the digital screen display with backlight, which is more clear and convenient to read data
• Multifunctional Water Quality Tester : It is a multifunctional water quality tester, which can test ph, tds, ec, salinity and temperature of the water

Generic Electrode Filling Fluid Electrolyte Buffer Solution Single Bottle for Ponds Sewage Disposal Scientific Research Aquarium Farmland Irrigation

• * 【Note】: This product is a 1 time use product and cannot be stored. It is recommended that you purchase more at 1 time as needed.
• * 【Tips】: A great filling liquid for dissolved meter. can be used again provided that it is not contaminated.

How to Grow Hydroponic Marijuana At Home: A Complete Guide to Growing Most Potent Cannabis Ever!

Growing Marijuana: Grow Cannabis Indoors Guide, Get A Successful Grow, Marijuana Horticulture, Grow Weed At home, Hydroponics, Dank Weed, Set Up A Quick And Easy System At Home, Marijuana Cultivating

Xpert Nutrients Master Grow A+B Basic Growth Fertilizer for the Vegetative Phase of Plants 1L

• 2-Part A&B basic fertilizer for growth, selected in order to provide the perfect ratio of nutrients needed in the vegetative phase of plants.
• Activates plants and protection genes that lead to strong plants and high score

Outsunny Mylar Hydroponic Grow Tent with Adjustable Vents and Floor Tray for Indoor Plant Growing 120 x 60 x 150cm

• REFLECTIVE TO SAVE ALL LIGHT: Hydroponic grow tent comes with heavy-duty metal zippers, double stitching seams and reflective Mylar lining, gives an efficiency boost to lighting setups of any power configuration, great to save all light into the grow light tent
• SELECTED MATERIALS: Uses high density 600D Oxford, tear proof and double stitched for perfect light blocking. The reinforced metal poles ensure security and stability.

Grow Lights for Indoor Plants, Garpsen Newest 80 LEDs Full Spectrum Led Plant Grow Light, 10 Dimming Level & 4 Heads Grow Lamp with Timer 360°Adjustable Gooseneck for Seedlings and Succulents

• ❀[Newest 4 Heads Grow Lights & Full Spectrum] Garpsen growing light is designed with 4 goose necks, provides a much wider coverage area than grow lamps with shorter led bulbs in the market and meet the needs of multi-layer planting. This grow bulbs includes 80PCS leds, and its spectrum 630-660nm and 400-470nm are the most effective spectrum to help plant photosynthesis.
• ❀[3 Light Modes &10 Dimming Levels] The indoor grow lamp includes red light and blue light, you can choose 3 color modes(Red Light, Blue Light & Mixed Light), and 10 brightness settings ranging from 10% to 100%, which effectively supplemented the lack of natural sunlight and promoted the growth of plants at all stages.

iDOO 12Pods Hydroponics Growing System, Indoor Herb Garden with LED Grow Light, Built-in Fan, Automatic Timer, Smart Garden Germination Kit, Adjustable Height Up to 11.3" for Home, Office

• 20% Faster than Soil Planting: Hydroponics growing system built-in a low-noise pump, circulating the nutrient solution absorded by the roots direactly. And built-in a fan which spreads pollen in florescence, disperses heat in germination.
• 4.5L Water Tank with Visual Window: The water tank of this indoor garden is 4.5L, and can support plants to grow for 1-2 weeks in the growth period. A visual window can see how much water in tank.

iDOO Hydroponics Growing System, 10 pods Smart Garden with LED Grow Light, Auto Timer, Indoor Herb Garden Germination Kit, 15 inches Height Adjustable, Water Shortage Alarm for Home Kitchen, Black

• Hydroponics Growing System: Designed with a silent water-pump circulation system. Plants in hydroponics grow 20% faster than in soil. No mess, No season limitation.
• Height-Adjustable Hydroponics System: The height of the lighting part of the hydroponics growing system can be adjusted for plants at different growth stages. Grow 10 plants at a time, height up to 15 inches.

HORTUZZ Hydroponics Growing System, 8 Pods Indoor Herbs Garden with LED Grow Light for Plants, Smart Home Gardening for Lettuce Tea Cilantro Tomato Rosemary (Novo 8 Black)

• 【🌿- Faster, Smarter, and Effortless】 Experience care-free gardening with the Hortuzz Novo 8 indoor smart gardens. Our nutrient and hydroponic irrigation system automatically waters your plants and ensures the optimal growing conditions for all-year-round organic freshness.
• 【💡- 22 Watt Full Spectrum Light】 These powerful, 22W, full-spectrum, LED lights, mimic sunlight & provide the ideal environment to deliver plant growth up to 5x faster than outdoors. Sixteen hours of light are provided automatically per day so you don’t have to worry about turning the lights on and off.

YINMIK YK-P01 pH Tester Digital pH Meter for Water Hydroponics, Accurate pH Temp Meter with ATC for Pool, Spa, Hot Tub, Indoor Plants, Drinking Water, Wine Beer Home Brewing, Aquarium

• [Large Horizontal Screen Display] Tired of using yellow ones with small vertical reading display? YINMIK YK-P01 pH meter screen is designed for horizontal display, pH and temperature value can be read simultaneously which makes your job easier and more comfortable
• [Wide Application] Excellently Use YINMIK PH Meters to measure the pH in your pool and spa; to monitor your indoor garden nutrients in water and soil and Check pH when mixing media for tissue culturing ; to get a decent idea of your mash ph when brewing beer or wine; to monitor your aquarium water conditions and test pH of your koi ponds water; to measure pH of your well water , alkaline tap water and other drinks .

GA Grow Tent 60x60x120CM(24''x24''x48'') Reflective Mylar Hydroponic Grow Tent with Observation Window and Waterproof Floor Tray for Indoor Plant Growing 2'x2'

• 【DOUBLE SAVE ALL LIGHT】:The GA grow tent uses high density 600D Oxford cloth,and it is lined with 98%-reflective silver colored PET mylar.It is great to save all light into the tent.Heavy duty explosion-proof zipper and double stitching protect the tent from light leaking simultaneously.
• 【UPGRADED TENT ACCESSORIES】: Clear visible window make it easy to observe the plant growing no need to open the door frequently. GA grow tent's double layer ventilation slots avoid light leak; the slots are adjustable with the tighten strings. GA grow tent's screen window can improve grow tent's aeration, p revent i nsects from entering.