LI-Ca – Advanced Soil Carbon and Water Flux Measurement Systems
LI-Ca Instruments (China) develops and manufactures high-precision systems for soil gas and water flux measurements, supporting research in carbon cycling, ecosystem processes, and climate science.
Their Portable Soil Carbon Flux Automatic Measurement System (PS9000) enables real-time, in situ monitoring of CO₂, CH₄, and N₂O emissions, fully compatible with ABB (LGR) laser analyzers for enhanced multi-gas analysis. Featuring an automated chamber design and low power consumption, the PS9000 is ideal for both field campaigns and long-term studies.
The Automatic Water Extraction System (LI-2100) provides efficient, stable, and contamination-free sampling for isotopic and chemical analysis. Together, these systems deliver research-grade data for understanding soil–atmosphere exchange and hydrological processes.
PS3010 Ultraportable Automatic Soil Respiration System
Rational greenhouse gas (GHG) emissions from human activities have a significant impact on global climate change.
Greenhouse gases mainly include CO₂, CH₄, N₂O, H₂O, and OCS, among others. Among these, CO₂, CH₄, and N₂O are considered the principal greenhouse gases and have attracted widespread attention. Soil greenhouse gas respiration represents an important pathway in the global greenhouse gas cycle. The release of CO₂, CH₄, and N₂O from soil significantly increases their concentrations in the atmosphere, thereby enhancing the greenhouse effect. Therefore, on-line, long-term, and accurate measurement of soil greenhouse gas fluxes is of great importance for studying greenhouse gas dynamics and flux processes.
The PS-3010 Portable Automatic Soil Respiration System is designed to measure soil CO₂ and CH₄ fluxes using the closed-chamber method. The system integrates measurement control, data storage, and processing functions. The PS-3000 continuously reads real-time changes in CO₂, CH₄, and H₂O concentrations inside the respiration chamber via an ultra-portable greenhouse gas analyzer (GLA131-GGA). By combining these data with environmental parameters such as air temperature, atmospheric pressure, and soil temperature, the system automatically calculates CO₂ and CH₄ emission fluxes. Both the raw data and the calculated flux results are stored on an SD card for subsequent analysis.
Experience the power of precision with the PS-9000 — a groundbreaking portable measurement system that redefines how soil CO₂ flux is assessed using the dynamic chamber method.
Designed with both researchers and students in mind, the PS-9000 offers a low-cost entry into soil flux monitoring without compromising on accuracy or performance.
Using advanced NDIR (Non-Dispersive Infrared) technology, it delivers precise and stable CO₂ detection while keeping overall system costs low — making professional-grade soil carbon analysis more accessible than ever. The PS-9000 seamlessly integrates control, measurement, data storage, and processing in one compact, field-ready unit. By combining additional environmental measurements such as air temperature, barometric pressure, and soil temperature, it ensures accurate and insightful calculations of soil CO₂ flux.
Lightweight and portable, the PS-9000 is designed for effortless field operation. Its wireless handheld controller provides real-time data visualization, allowing users to adjust settings and make informed decisions instantly. With low power requirements, it’s built for all-day outdoor measurements without interruption, while instant on-screen and stored results eliminate the need for post-processing — saving valuable time in the field and the lab.
The PS-9000 combines reliability, simplicity, and affordability in one powerful package — the perfect solution for universities, research institutions, and environmental studies programs aiming to unlock the full potential of soil carbon monitoring.
The PS-3020 Portable Automatic Soil Respiration System is designed to measure soil N₂O and CO flux emissions using the closed-chamber method. The system integrates measurement control, data storage, and data processing functions. The PS-3020 continuously monitors real-time changes in N₂O and CO concentrations within the respiration chamber using a portable N₂O and CO analyzer. These measurements are combined with environmental data such as air temperature, atmospheric pressure, and soil temperature to automatically calculate the N₂O and CO emission fluxes. Both the raw data and calculated flux results are stored on an SD card for easy retrieval and analysis.
The SC-12N Portable Automatic Soil Respiration Chamber enables automatic, repeated measurements. It is lightweight, easy to carry, and convenient for in-situ operation. Its unique design ensures higher measurement accuracy and stability.
The PS-3020 allows users to set various measurement parameters in real time through a wireless mobile app, which also displays the instrument’s measurement results simultaneously.
LI-2100 Automatic Water Extraction System
Stable Isotope Analysis Technology
Stable isotope analysis is an important research method applied in many scientific fields, including atmospheric science, hydrology, and ecology. Traditional methods for extracting water from plant and soil samples have several drawbacks—such as the need for liquid nitrogen, complex operation, fragile glass components, potential health hazards, and environmental pollution. With the advancement of isotope analysis techniques and the increasing speed of isotope water measurements, these conventional extraction methods can no longer meet the demands of modern research.
LI-2100 Automatic Water Extraction System — The Ideal Solution for Rapid and Reliable Sample Preparation
The LI-2100 offers a fast, easy-to-use, and efficient extraction system for plant, soil, and other sample types.
SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System
SF-3500 Multi-Channel Fully Automatic Soil Gas Flux Measurement System
To address the spatiotemporal variability of soil gas flux, LICA has developed the SF-3500, a multi-channel, fully automatic measurement system. The SF-3500 supports connection with various gas and stable isotope analyzers, enabling simultaneous measurement of multiple soil gas fluxes (e.g., CO₂, CH₄, N₂O, and ¹³CO₂). The system automatically switches between multiple flux chambers, allowing gas concentrations to return to background levels for continuous, long-term, multi-point monitoring.
Drawing on years of experience and the advantages of similar products, the SF-3500 features enhanced precision, reliability, and usability. It supports multi-analyzer connections for synchronized, multi-parameter flux measurement, minimizing cross-system errors.
The SF-3500 also offers modern convenience features, including:
LCD touch screen and Android app control and display — no computer required
Automatic flux calculation, eliminating the need for post-processing
Remote control and data transmission, simplifying field operation and maintenance
Tested and verified through long-term field deployment, the SF-3500 delivers exceptional accuracy and stability, making it ideal for extended environmental and ecological monitoring applications.
