Plant Chlorophyll & Polyphenol Meter

I. Equipment Overview:

This multifunctional leaf analyzer is specifically designed for fields such as plant physiology, agronomy and horticulture, crop breeding and selection, ecological monitoring, and nutritional and medicinal research. The instrument integrates four core measurement functions—chlorophyll, nitrogen balance, anthocyanins, and flavonoids—serving not only as a precise chlorophyll meter but also as an efficient nitrogen balance assessor, anthocyanin detector, and flavonoid analyzer. With “precision, non-destructive, intelligent, and efficient” as its core advantages, it provides multidimensional leaf physiological data support for research and production, making it the preferred choice to replace traditional single-measurement solutions.

The instrument measures plant leaves without the need to collect samples, enabling real-time, in-situ, and non-destructive measurements—preserving sample integrity while supporting long-term dynamic tracking of the same plant. Operation requires no complex calibration or prior sample preparation; users can begin measurements immediately upon startup, significantly lowering the barrier to entry. Whether in controlled laboratory environments or complex field settings such as farmlands and forests, the instrument operates reliably, making leaf physiological measurements more flexible and efficient.

II. Features and Functions

1. Rapid in vivo plant detection supporting real-time, non-destructive measurements; it allows for leaf monitoring throughout the crop growth cycle without affecting normal growth.

2. All-in-one device integrating four core measurement functions: chlorophyll, anthocyanins, flavonoids, and nitrogen balance

★3. Measures all parameters simultaneously in a single operation; five parameters—TChl (total chlorophyll), Chl (chlorophyll a and b), Anth (anthocyanin index), Flav (flavonoid index), and NBI (nitrogen balance index)—are displayed simultaneously on the same screen and can be saved at the same time

4. High measurement accuracy with a built-in system to prevent interference from strong light

★5. Large storage capacity: Stores, views, and exports up to 50,000 data sets

6. Multifunctional USB port for data export and charging; allows direct connection to a computer for data export to Excel, making operation simple and convenient

7. GPS positioning function: Displays real-time satellite-determined latitude and longitude to pinpoint the current measurement location.

★8. The instrument features a built-in 4G wireless transmission module that supports real-time data upload in the field. Measurement results can be transmitted directly to a dedicated cloud-based agricultural data center. Enterprises are assigned a dedicated account for this data center, where uploaded data can be viewed.

★9. The Cloud Agricultural Data Center allows users to retrieve historical data for any time period, including measurement time, TChl (total chlorophyll), Chl (chlorophyll a and b), Anth (anthocyanin index), Flav (flavonoid index), NBI (nitrogen balance index), and GPS location information. It supports online downloading, Excel export, and printing.

10. High-contrast LCD display ensures clear data visibility even in bright sunlight

11. Designed with a low-power mode and equipped with a built-in high-capacity rechargeable lithium-ion battery featuring overcharge protection, it is energy-efficient, environmentally friendly, and convenient for outdoor use.

★10 cm leaf clamp for easy measurement of the center of large leaves, tailored to operational scenarios, and designed to reduce fatigue during prolonged use.

★13. Built-in bilingual (Chinese and English) display with one-touch switching for seamless operation.

III. Technical Specifications

★5 measurement parameters:

·TChl: Total chlorophyll

·Chl: Chlorophyll (a, b)

·Anth: Anthocyanin index

·Flav: Flavonoid index

·NBI: Nitrogen balance index (Chl/Flav ratio)

Valid measurement range:

·Total chlorophyll: 0–80 µg/cm²

·Anthocyanin Index: 0–1.5

·Flavonoid Index: 0–3.0

·Nitrogen Balance Index: 999.99

Reproducibility: Chlorophyll: 1.5%, Flavonoids: 4.5%, Anthocyanins: 1.5%

★Repeatability: Chlorophyll: 1%, Flavonoids: 1.5%, Anthocyanins: 1%

Measurement Method: Leaf clamp method

Measurement Diameter: 12 mm

Leaf Thickness: ≤1.5 mm (Note: Errors increase for thicknesses >1.5 mm)

Single Measurement Time: ≤3 s

User Interface: LCD screen, buzzer

★ Leaf Clamp Depth: ≤10 cm

Location Parameters: Built-in GPS

GPS Relative Position Accuracy: <2.5 m (CEP 50%, 24-hour static)

Storage Capacity: 50,000 sets of multi-parameter data

Data Output: Export .csv files to a host computer; upload to server platform via 4G

Data Download: USB data download port

Temperature Range: -10 to 45°C

Battery: Rechargeable lithium-ion battery

Battery Life: 7 hours