Best Scientific Light Meter

Thermo Scientific Orion Star A211 Benchtop pH/ISE/mV/Temperature Meter

Thermo Scientific Orion Star A211 pH Benchtop meter with pH range: -2.00 to 20.00.
Large, backlit graphic LCD display shows pH/mV/RmV and temperature along with electrode status, time, date, sample ID, user ID and calibration points.
AUTO-READ locks in the stable reading on your screen, ready indicator alerts when readings are stable, and timed reading gathers data in specific time intervals.
Included electrode arm and newly-designed probe holder make it easier to maintain and place probes into samples.
Works with almost every AC power source with the included universal power adapter, or use four AA batteries (sold separately) to run the meter on DC power.

‍♂️Dissolved oxygen meter can be used to measure and monitor processes where oxygen levels can affect reaction rates, process efficiency or the environment:e.g.aquariums,swimming pools,teaching experiments, laboratory sterile environments,scientific research,environmental testing (lakes, streams, oceans),Wastewater treatment, wine production and other fields..
Oxygen solubility will be affected by temperature, atmospheric pressure, and salinity.Our dissolved oxygen meter with automatic temperature compensation,temperature compensation of 0-40 ℃ can meet normal use.Dissolved oxygen meter digital screen display with backlight makes data reading more clear and convenient.Auto power-off in 8 minutes if not using it and can low battery indication..
Compact pen-shape design of oxygen analyzer, lightweight for mobility,In order to better take care of the small pets in our family water, they can become healthier.The aquarium water test kit is a good choice.Through dissolved oxygen test kit you can test water anywhere to get the purest water..

【3-IN-1 MULTFUNCTION】: The Soil Moisture Meter has the functions of soil moisture, pH, and sunlight intensity. The plant moisture meter can accurately grasp the time and amount of water needed to water the plants, and help you plant your favorite flowers and plants. (This soil tester CAN ONLY be used in soil, it CANNOT be used to test any liquids).
【NEWLY UPGRADED LIGHT AREA & Probe】：The soil moisture meter is newly upgraded. The light-sensing area is larger and more sensitive than before. The upgraded version of the moisture meter probe is more durable and not easy to fall off. It allows your plants to photosynthesize better and grow healthily. The best soil moisture meter as Halloween gifts for family and friends..
【EASY TO USE】:This soil ph meter uses dual needle detection technology to quickly and accurately detect soil moisture, pH, and light conditions. Just insert the sensor probe into the soil about 2-4 inches, and flip the switch to test the water, pH, and sunlight you want to measure. No batteries or electricity needed, plug and read..
【WIDELY APPLICABLE】: This moisture meter is suitable for indoor and outdoor use. The design is light and portable, and it is easy to carry and use outdoors. The soil ph meter is an ideal soil t....

... any other low-frequency home appliances, etc..
【Accurate Measurement】This EMF meter tests electromagnetic field range from 0.1 to 199.9mG with a resolution of 0.1mG/0.01µT. Detects electric field range 1-1999V/M with 1V/M resolution and tests ambient temperature range 32-122℉..
【How Does it Aid Your Life】 Scientific test tool aids for students assignment projects, people who want to have DIY home EMF inspections to eliminate radiation risks that potentially deteriorate your family’s health..
【Multifunction】 This EMF reader meter has multiple functions includes data hold & max measurement, one-key to lock the data, manual/auto shut off, safe value setting, and large LCD display of the values with the sound light system. All designed for your convenience..
【Paranormal Research】 This EMF tester is a compact to use while travel. It is an aid-on analysis tool for parapsychologist research, visitor for haunted house inspection, and hotel inspections, also made for people with pure curiosity..
ENGiNDOT provides friendly 24-hour customer service. If you have any questions, please get in touch with us and we will serve you wholeheartedly..

【3-in-1 Soil Test Kit】-- You can use plant meter to measure the light, humidity and pH of the soil. The three-in-one function of the moisture meter can help you understand the soil condition in real time. The professional high-precision soil tester is More accurate measurement . This moisture meter for potted plants is Garden lover's gift..
【Accurate Soil ph Meter】-- Moisture meter plants through double needle measurement, these two moisture probes can scientifically and accurately measure the moisture and pH value of vegetation, and sensitively detect changes in soil, so that plants can be planted with reliable data ..
【Easy to Operate Soil Moisture Meter】-- Soil moisture meter after inserting the Potted , You don't have to wait to see the data, plant ph tester 3-key switching, convenient and quick. The soil test kit relies on electrodes, does not require batteries, and has reliable data. moisture tester is an ideal tool for planting and gardening..
【Widely Applicable Plant Accessories】-- The moister meter for plants Suitable for home garden breeding, rice planting, vegetable planting, forest planting, succulent soil,potted plants, flower planting, greenhouse planting, garden planting, soil testing,etc, moisture meter for potted plants ....

Type:Lens Transmission Meter, Spectrum Transmission Meter,Light Transmission Meter,Spectrum Transmittance Meter.
Accuracy: ±2%(Colorless and transparent material).
PL transmission meter, BL transmission meter, Light Transmittance Meter, Three function in ONE device..
Self-calibration and auto-calibration, NO need any manual adjustments..
Simple operation, putting the testing sample in the testing position, PL, BL and VL transmission values of the sample will simultaneously display..

ESSENTIAL KIT: This tool kit provides everything you need to provide a stable light source and measure the relative optical power of fiber optic cables.
POWER METER (FPM-50A): Measure single-mode wavelengths from 800-1650 nm with relative power ranging from -50 to +26 dBm.
LIGHT SOURCE (FLS-50): Provides a stable light source at 1310 nm or 1550 nm wavelengths for the optical power meter.
INCLUDED ADAPTERS: Includes FC, SC, and LC adapters for both power meter and light source for PC/UPC connectorized cables.
INCLUDES: FPM-50A Power Meter, FLS-50 Optical Light Source, and H-22 Carrying Bag with Straps.

Sper Scientific 840011 This laser power meter is less than ¾” thick, weighing less than 4 oz. (120 g) and is easily carried in a shirt pocket. Ideal for in the field testing and repair of DVD, VCD, CD and MD (mini disk) players. Range: 400~1100 nm.
Resolution: +/-5%@calibrated wavelength 633 nm / 1mW.
Probe Dimensions: 3½" x ½" x ½" (84 x 16 x 10mm).