Reviews Wavelength Dispersive

Triplett GSM450 Carbon Monoxide/Carbon Dioxide IAQ Datalogger Meter – CO, CO2, Temperature, Humidity, Wet Bulb and Dew Point

• Measures CO, CO2, Temperature, Humidity, Wet Bulb and Dew Point on large backlit LCD display.
• STEL (Short Term Exposure Limit – 15 minute weighted average).
• NDIR (non-dispersive infrared) waveguide technology.

4 Digits LED 752PRO UV-Vis Spectrophotometer Lab Equipment 190nm-1100nm Wavelength Spectrophotometer (110V/60Hz)

• Low Stray Light: Precision optical design ensure the stray light lower than 0.05% to meet clients' need when they want to test high absorbance sample..
• High Wavelength Accuracy: Built-in spectral characteristics work for the auto wavelength detection and calibration to ensure the accuracy and long-term stability..
• Wide Wavelength Range: The wavelength range covers from 190nm to 1100nm. The widest wavelength range of the similar products is offered to meet the needs of most spectrophotometric test..
• Convenient light source replacement: Deuterium lamp adopt universal flange fixing, deuterium lamp replacement could be completed by operation of two screws, no need to adjust light path make maintenance easier and reliable..

4 Digits LED 752PRO UV-Vis Spectrophotometer Lab Equipment 190nm-1100nm Wavelength Spectrophotometer (220V/50Hz)

• Low Stray Light: Precision optical design ensure the stray light lower than 0.05% to meet clients' need when they want to test high absorbance sample..
• High Wavelength Accuracy: Built-in spectral characteristics work for the auto wavelength detection and calibration to ensure the accuracy and long-term stability..
• Wide Wavelength Range: The wavelength range covers from 190nm to 1100nm. The widest wavelength range of the similar products is offered to meet the needs of most spectrophotometric test..
• Convenient light source replacement: Deuterium lamp adopt universal flange fixing, deuterium lamp replacement could be completed by operation of two screws, no need to adjust light path make maintenance easier and reliable..

Confer SP3248 8' x 8' Handi Spa Hot Tub Deck Foundation Plastic Resin Base Pad

• Precisely monitors indoor air quality - CO2, Temperature, Relative Humidity and Atmospheric pressure in Real-Time.
• Visual and Sound Warnings when CO2 concentration gets too high.
• Power-efficient E-Ink display ensures super long battery life for this wireless device (up to 4 Years).
• Smartphone app for historical data viewing (supports iPhone and iPad with iOS 12 or later, Android devices with Nougat 7.0 or later, compatible with Bluetooth 4.1 or later).
• Uses non-dispersive infra-red sensor (NDIR) technology for most precise CO2 measurements.

Radical Professional Research Trinocular Geology LED Polarizing Microscope 9Mp PC Camera

• Head: Trinocular Inclined At 45 Degrees Rotatable 360 Degrees With Slots For Retarding Plates Sliding Bertrand Lens Camera Port: 100% Light Transfer.
• Analyser: With Slots For Retarding Plates Sliding Bertrand Lens Polarizer: 360 Dregrees Rotation Swing Out For Bright Field.
• Nosepiece: Centrable Quadruple Positive Centering Click Stops. Stage: 130Mm Graduated Rotatable Stage 360 Degree In Steps Of 5 Degree Stage Locking Facility.
• Compensator: Mica: 1/4Th Wavelength Gypsum: Full Wavelength Quartz 14 Wavelength.
• Condenser: Na 1.25 Movable With Analyzer Camera: 9 Mega Pixel Usb Camera W Optical Adapter.

Temtop Air Quality Monitor Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Tester Indoor Outdoor Air Pollution Detector w/Audio Alarm Easy Calibration (M2000)

• Using non-dispersive infrared technology (NDIR), full-scale temperature range correction.
• Various air quality warning forms such as indicator lights and facial comfort expressions.
• It is suitable for cars, baby rooms, homes, Offices and other densely staffed occasions, it is also suitable for greenhouses, breeding farms, etc..
• With large-capacity battery, long battery life,can last for 24 hours without charging,packaged with one USB charging cable.
• Packeage include: PTH host × 1, battery × 1 (built-in), user manual × 1, USB cable × 1, Product certificate..

Radical Research Geology Ore Incident Light Polarizing Microscope w 9 Mp USB PC Camera

• Head: Trinocular Inclined At 45 Degrees Rotatable 360 Degrees, Camera Port: 100% Light Transfer.
• Analyser: With Slots For Retarding Plates Sliding Bertrand Lens Polarizer: 360 Dregrees Rotation.
• Nosepiece: Centrable Quadruple Positive Centering Click Stops Epi Transmitted Illumination: 20W Halogen 110/220V.
• Objectives: Strain Free P4X, P10X, P40X Spring Loaded Eyepieces: Wf 10X, 10X With Cross 10X With Micrometer, Stage: 130Mm Graduated Rotatable Stage 360 Degree In Steps Of 5 Degree Stage Locking Facility Compensator: Mica: 1/4Th Wavelength Gypsum: Full Wavelength Quartz 14 Wavelength.
• Camera: 9 Mega Pixel Usb Camera W Optical Adapter Software: Drivers For Win Mac.

3MHz Ultra Photon Rejuvenation 3-Color Light Facial Care Massager Anti Aging Machine Skin Toning Device

• The Photon Beauty Device, designed for facial beautification, uses natural light waves, which are transmitted by LEDs into the skin..
• Red light: wavelength 625 ±3nm, activate cells, promotes the formulation of collagen, remove wrinkles of eyes and eye pouch..
• Green light: wavelength 525±3nm, balance of water and oil for oily skin , very suitable oily skin,sensitive skin..
• Blue light: wavelength 465 ±3nm, activate cells, down melanin, lighting and whiting skin, also can make skin moisture..
• Comes with a pair of goggles, power adapter and gift box. Device needs to be powered by power adapter..

Carbon Dioxide CO2 Detector Monitor Meter Tester Sensor Temperature Humidity Indoor 9999ppm NDIR Air Quality IAQ Handheld Portable Digital Wet Bulb

• MONITORING & ANALYSIS Allows continuous monitoring of CO2, RH & Temperature Level. Data output to PC every 2 seconds..
• MULTIPLE MEASUREMENT DISPLAYS AT ONCE- CO2, Temperature, and Relative Humidity readings are all shown on the LCD display at the same time.
• NORMAL/ MAX/ MIN/ AVERAGE (15mins/ 8hrs) MODE- It can show not only the normal, maximum and minimum CO2 readings but also the weighted average CO2....
• AUDIBLE CO2 SOUND- The alarm beeps when the CO2 Level exceeds the preset value. The alarm threshold is adjustable..
• NDIR SENSOR for CO2 DETECTION- Non-dispersive infrared technology is used to ensure the reliability and long-term stability. Measures 0~9999ppm while....

2 Pack 1000w LED Grow Lights for Indoor Plants Full Spectrum, Plant Growing Lamps with Veg & Bloom & Veg-bloom 3 Modes, Daisy Chain and Temperature Hygrometer for Indoor Grow Tent Plant Veg and Flower

• ...at labile shortcomings of LED reflectors, if a short circuit occurs, the reflector can easily melt and catch fire, the upgraded aluminum heat sink is applied to improve the heat dissipation efficiency, slow down the light decay, and be safe, energy saving and efficient.
• Full Spectrum LED Indoor Grow Light: red light wavelength is 620-625NM, blue light wavelength is 450-455NM, white light lumen is 6000-6500K, infrared light wavelength is 730-740NM, purple light wavelength is 395-400NM, orange light wavelength is 600-610NM, from seeds to flowers, full spectrum LED grow lights are suitable for all stages of plant growth, and help the growth of the whole life cycle of plants.
• Extends the Lifespan: this LED grow lights for indoor plants full spectrum have a longer lifespan than most LED lights are rated for, in contrast to many other grow lights that tend to last around 20, 000 hours before needing to be replaced, ours features good technology that extends the lifespan to no less than 30, 000 hours.

CGOLDENWALL Visible Spectrophotometer 721G Lab Equipment Wavelength Range:340-1000nm Spectral Bandwidth: 5nm

• This Visible Spectrophotometer adopts a microprogramming technology. It can be used in a material determination, a quantitative analysis in a visible spectrum field. This equipment is a multipurpose analyzer which is necessary for all general labs. It applies to the medical health, clinical examination, biochemistry, petrochemical engineering, environmental protection, quality control’s department and teaching lab of universities and colleges etc..
• Fundamental principles: The spectrophotometer analytical method is based on the different materials’ molecular structure’s selective absorption of electromagnetic radiation..
• The available electromagnetic radiation’s spectral region is normally between 330nm-800nm..
• Main Technical standard: Wavelength Range: 340nm~1000nm.
• Stray light: ≤0.5%(T)(at 360nm ,with NaNO2).

Azzota SM-1100, 4nm Economic UV-VIS Spectrophotometer, Wavelength Range: 200-1000 nm

CGOLDENWALL 722N Visible Spectrophotometer Wavelength Range 320-1020nm Spectral bandwidth 4nm LCD Digital Lab Spectrophotometer 110V with USB and RS232 interfaces Wavelength accurracy±2nm

• Adopted Technology- 722N type spectrophotometer adopts microcomputer processing technology, applicable for material determination&quantitative analysis in visible spectroscopy field. Wavelength range: 320-1020mm.
• Large Sample Chamber- The visible spectrophotometer possess a large sample chamber, which can even accommodate 10cm cuvettes..
• Durable Tungsten Lamp- The instrument adopts refined tungsten lamp, ensuring the service life of the instrument..
• High Accurate Measurement- The measurement of this spectrophotometer is accurate, reproducible and stable. There are extremely small errors in measuring the wavelength and transmittance..
• Wide Application- The visible spectrophotometer can be widely applied in medical testing, food, petrochemical industry, environmental protection and monitoring and many other fields..