Plant Nutrition Analyzer
Measure chlorophyll (SPAD), nitrogen, leaf temperature & humidity non-destructively in 2 s. Bluetooth sync, 2,000-record storage.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Measured Parameters
- SPAD (relative chlorophyll), leaf surface temperature, leaf surface humidity, nitrogen content
- Chlorophyll Range
- 0.0 to 99.9 SPAD
- Chlorophyll Accuracy
- ±1.0 SPAD (for SPAD values of 0 to 50 at room temperature)
- Chlorophyll Repeatability
- ±0.3 SPAD (for SPAD values of 0 to 50)
- Leaf Surface Temperature Range
- 10 – 99.9 °C
- Leaf Surface Temperature Accuracy
- ±0.5 °C
The Plant Nutrition Analyzer TYS-4N is a handheld, non-destructive leaf analyzer that measures four key plant health indicators simultaneously—chlorophyll content (SPAD), leaf surface temperature, leaf surface humidity, and nitrogen content—without interrupting plant growth or damaging the tissue being tested. A 2 mm × 2 mm measurement aperture and a 2-second interval make it practical for rapid, high-throughput field and greenhouse sampling.
Accuracy is maintained through multi-point, multi-stage calibration, and the built-in leaf chamber incorporates a multi-layer anti-interference design that shields measurements from ambient light and environmental temperature variation—two common sources of error in portable optical leaf instruments.
Data management is straightforward: the onboard OLED display shows real-time readings along with the average, maximum, and minimum of the last 30 measurement sets, and the unit stores up to 2,000 records locally. Bluetooth connectivity pairs the analyzer with a mobile app for real-time synchronization and unlimited storage in the app, keeping large-scale crop monitoring studies organized without manual transcription.
Powered by two standard 1.5 V batteries rated for up to 5,000 continuous measurements, the TYS-4N is suited for agronomic research, horticultural trials, precision-farming nutrition assessments, and plant physiology studies where rapid, in-situ leaf analysis is required. A 20% low-battery alert ensures the instrument never shuts down unexpectedly mid-sampling session.
Measured Parameters
- SPAD (relative chlorophyll), leaf surface temperature, leaf surface humidity, nitrogen content
Chlorophyll Range
- 0.0 to 99.9 SPAD
Chlorophyll Accuracy
- ±1.0 SPAD (for SPAD values of 0 to 50 at room temperature)
Chlorophyll Repeatability
- ±0.3 SPAD (for SPAD values of 0 to 50)
Leaf Surface Temperature Range
- 10 – 99.9 °C
Leaf Surface Temperature Accuracy
- ±0.5 °C
Leaf Surface Temperature Repeatability
- ±0.2 °C
Nitrogen Content Range
- 0.0 – 99.9 mg/g
Nitrogen Content Accuracy
- ±5%
Nitrogen Content Repeatability
- ±0.5 units
Leaf Surface Humidity Range
- 0.0 – 99.9 %RH
Leaf Surface Humidity Accuracy
- ±5%
Measurement Area
- 2 mm × 2 mm
Maximum Leaf Thickness
- 1.2 mm
Measurement Interval
- 2 seconds
Display
- High-definition OLED
Onboard Data Storage
- 2,000 records
App Data Storage
- Unlimited (via Bluetooth-connected mobile app)
Wireless Connectivity
- Bluetooth (with real-time app synchronization)
Power Supply
- 2 × 1.5 V dry batteries
Battery Life
- Up to 5,000 continuous measurements
Low-Battery Alert
- Triggered at 20% remaining charge
Calibration Method
- Multi-point, multi-stage calibration
What parameters does the TYS-4N measure, and what are their measurement ranges?
The analyzer measures four parameters in a single clip: SPAD (relative chlorophyll content) from 0.0 to 99.9 SPAD units, leaf surface temperature from 10 °C to 99.9 °C, nitrogen content from 0.0 to 99.9 mg/g, and leaf surface humidity from 0.0 to 99.9 %RH.
How accurate are the readings?
Chlorophyll accuracy is ±1.0 SPAD for readings of 0 to 50 at room temperature, leaf surface temperature accuracy is ±0.5 °C, nitrogen content accuracy is ±5%, and leaf surface humidity accuracy is ±5%. Repeatability is ±0.3 SPAD for chlorophyll (0 to 50), ±0.2 °C for leaf surface temperature, and ±0.5 units for nitrogen content. Multi-point, multi-stage calibration helps keep each measurement accurate and reliable.
Will using the analyzer harm the leaves or affect plant growth?
No. The TYS-4N uses a non-destructive optical measurement method, so leaves are not damaged and normal plant growth is unaffected. This makes it suitable for repeated measurements on the same leaf or plant over the course of a study.
How much data can the instrument store, and can I export readings to a computer or phone?
The instrument stores up to 2,000 measurement records onboard. Via built-in Bluetooth, it connects to a companion mobile app that provides real-time data synchronization and unlimited additional storage. The display also shows the average, highest, and lowest values across the last 30 measurement sets for quick in-field review.
What are the leaf thickness and measurement area requirements, and how long does each measurement take?
The leaf chamber accommodates leaves up to 1.2 mm thick. Each measurement is completed within a 2-second interval, and the active sensing area is 2 mm × 2 mm, allowing precise targeting of specific leaf regions.
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