GYJ-D

This state-of-the-art chlorophyll and nutrient content meter is a game-changer for data-driven agriculture and plant research. Moving far beyond simple diagnostics, this device provides a comprehensive, field-ready solution for real-time plant health assessment and optimizing fertilization strategies. Unmatched Speed and Measurement Precision The core value of this meter lies in its efficiency. Utilizing advanced optical sensor technology, it delivers combined chlorophyll (SPAD 0.0–99.9) and nitrogen content (0.0–99.9 mg/g) measurements in less than 3 seconds. This speed streamlines fieldwork, allowing users to rapidly analyze large sample sets. Crucially, the reliability is outstanding. The instrument boasts high accuracy (+/- 1.0 SPAD for chlorophyll and +/- 5% for nitrogen) coupled with excellent repeatability (+/- 0.3 SPAD), ensuring that nutrient management decisions are based on the most dependable data available. The inclusion of leaf temperature (-10–99.9℃) and humidity (0.0–99.9 RH%) measurements provides a holistic view of plant physiology, essential for comprehensive health assessment. Robust Data Analysis and Workflow Integration The meter is engineered for seamless data management. With capacity to store up to 4000 records, it enables researchers and farmers to conduct in-depth analysis and identify long-term nutrient trends across fields or experimental plots. Data-driven decision-making is simplified through the included software, which facilitates automatic analysis and graphical data representation for quick, intuitive interpretation. Data transfer to a computer is straightforward, allowing records to be backed up and saved in standard Excel format for integration into existing data management systems and report generation. The user interface, featuring a large LCD screen and intuitive menu, further enhances workflow efficiency. Portable Design & Environmental Stewardship Weighing only 200g, the durable, portable design is perfectly suited for continuous fieldwork, offering the flexibility of both automatic and manual measurement modes to adapt to various research and monitoring needs. By providing the precise data necessary to fine-tune fertilization, this meter serves as a powerful tool for Environmental Stewardship. Optimizing fertilizer usage not only enhances crop yields and quality but also significantly reduces nutrient runoff, supporting crucial sustainable agricultural practices. Trusted by professionals across botany laboratories, environmental monitoring projects, and commercial farms, this chlorophyll meter is an essential upgrade for anyone serious about precise nutrient monitoring and achieving consistent, superior results.

OK on this product I’ll find that it will be helpful. Once we understand exactly what we’re supposed to do with all the information. I think any information packed should’ve been sent out a little more in detail about what the device is and how it works, but I think longer that it will help me in my flower and greenhouse ideal to keep the nitrogen levels up and humidity or the temperature at the right step. I think this is a wonderful product and I can’t wait to try some more.

I immediately unboxed and tested my new tool. What a neat little gadget! It quickly told me how many mg/g of nitrogen was in my plants, an important stat to know for keeping plants healthy. It was also repeatable, so not just throwing out numbers, which was my initial concern. Nope! It’s solid! The 4 in one plant nutrition tester also came in a nice, lockable carrying case to protect it. Great purchase!

Generally good, but the temperature output is more closely related to the air temperature. It could be my mistake in assuming it would measure leaf temperature. It would also be good if the software could be accessed another way, as most computers these days no longer have disc drives.

Works amazingly, as described. Pretty accurate to my other more expensive meter, also relatively sturdy. Fair price to save your plants a lot of stress !!!

I definitely recommend this product to everyone. It's easy to use and very precise. If you want your plants to grow great you need to purchase one of these .I give this product a 💯 .

The GYJ-A Chlorophyll Tester has turned out to be quite a useful gadget in my home garden. As someone who's serious about plant care, having a tool that gives me accurate chlorophyll readings is great. It measures in SPAD units, which helps me keep track of my plants' health easily. The leaf temperature measurement gives a more comprehensive understanding of what's going on with my plants. It's interesting to see how temperature and chlorophyll levels interact, especially when adjusting irrigation or fertilization. The real-time data tracking feature helps in making prompt decisions to ensure my plants get exactly what they need when they need it. This chlorophyll meter is versatile too. I've used it on various plants, from vegetables to ornamentals, and it works well across the board. Plus, knowing that I'm optimizing plant care in an eco-friendly way makes this tool even more valuable to me. Definitely a good pick for gardeners, farmers, or anyone keen on plant health and environmental stewardship.

This nutrition tester is a great way for anyone who likes to garden or grow things to see exactly how well their plants are doing. It is also great for anyone teaching their kids the science of growing their food and how things work. It seems to work well for a multitude of plants and is fairly easy to physically use, even for kids. The LCD screen is easy to read, though it may take a little time to research what each level is and what the ranges are for each plant type, so you can compile the data into something useful, again an excellent teaching tool. This gives you fast readings to tell you the temperature of the plant, humidity level, nitrogen and chlorophyl content. This is also a great tool for people with limited dexterity, as it is very easy to use.

It does work and it is accurate. I'm not a farmer or professional plant "knower". The device seems rather niche but I have ran a few tests and it seems to be reading some real results. I have another similar device that I compared the results too and they are relatively within the same range. It's built well and feels solid and sturdy. Comes with a carry case to protect it when stored away.

Excelente herramienta...

I got this primarily to monitor vegetables we grow in the garden - to keep a better watch on nutrients instead of guessing at when they need water or ferliizer. This measures chlorophyll, nitrogen, relative humidity and temperature. To test, as my plants are barely seedlings, I tested some of our houseplants. I tested over a span of time and could see positive changes after watering and fertilizing. The meter itself is easy to use. The calibration listed in the manual is not exactly what I've had to do so here's the difference I've found: Turn the power button on, close the measurement head and wait until the beep and VERIFY SUCCESS is displayed. The manual gives a slightly different method and screen messages so I suspect that's for a different version or revision - see my first and second pictures. If you press down before measuring a leaf, it should show zero for all except the temperature reading - see my third picture. Once this is done, can start measuring leaves. It does take a bit of finesse to get things positioned correctly but once you get the hang of it, it's quite easy. The reading stays on the screen until you measure again so there's no problem with having to record the numbers immediately. The device will eventually shut down to preserve battery life. The battery is rechargeable with the supplied power brick and USB A to micro USB cable. The micro USB charging port does seem a bit antiquated compared to almost all other devices being USB C but it doesn't affect the device in any negative way. It also comes with a lanyard, instruction manual, mini CD with software that I'll probably not use, at least until I find a PC with a drive and a nice carrying case. The case does come with keys to like but the locks are rather clunky and probably very easy to pick. Overall, a great device that will hopefully guide me to a bumper crop this year.