This page includes information on older products, most of which were discontinued prior to 1990.

Although we no longer service the instruments listed here, we may still have replacement parts available for discontinued instruments. Please contact us with your instrument name and part numbers and we’ll let you know if we have the parts. If we don’t, we may be able to suggest somewhere else to obtain the parts.

LI-60 Diffusive Resistance Meter

LI-60 Diffusive Resistance Meter

Instruction manual for the LI-60 Diffusive Resistance Meter.

LI-65 Autoporometer

LI-65 Autoporometer

Instruction manual for the LI-65 Autoporometer

LI-175 Solar Meter Integrator

LI-175 Solar Meter Integrator

Instruction manual for the LI-175 Solar Meter/Integrator System.

LI-170 Quantum Radiometer Photometer

LI-170 Quantum Radiometer Photometer

Instruction manual for the LI-170 Quantum/Radiometer/Photometer

LI-185A Quantum Radiometer Photometer

LI-185A Quantum Radiometer Photometer

Instruction manual for the LI-185A Quantum/Radiometer/Photometer.

LI-185B Quantum Radiometer Photometer

LI-185B Quantum Radiometer Photometer

Instruction manual for the LI-185B Quantum/Radiometer/Photometer.

LI-188 Integrating Quantum Radiometer Photometer

LI-188 Integrating Quantum Radiometer Photometer

Instruction manual for the LI-188 Integrating Quantum/Radiometer/Photometer (1979).

LI-188B Integrating Quantum Radiometer Photometer

LI-188B Integrating Quantum Radiometer Photometer

Instruction manual for the LI-188B Integrating Quantum/Radiometer/Photometer.

LI-189 Quantum Radiometer Photometer

LI-189 Quantum Radiometer Photometer

Instruction manual for the LI-189 Quantum/Radiometer/Photometer.

LI-250 Light Meter

LI-250 Light Meter Instruction Manual

Operating instructions for the original LI-250 Light Meter, updated in 1996.

LI-500 Integrator

LI-500 Integrator

Instruction manual for the LI-500 Integrator.

LI-510 Integrator

LI-510 Integrator

Instruction manual for the LI-510 Integrator.

LI-510B Integrator

LI-510B Integrator

Instruction manual for the LI-510B Integrator.

LI-550 Printing Integrator

LI-550 Printing Integrator

Instruction manual for the LI-550 Printing Integrator.

LI-550B Printing Integrator

LI-550B Printing Integrator

Instruction manual for the LI-550B Printing Integrator.

LI-670 Flow Control Unit

LI-670 Flow Control Unit

Instruction manual for the LI-670 Flow Control Unit.

LI-COR Air Pump Diaphragm Replacement Instructions for the LI-670 Flow Control Unit

Air pump diaphragm replacement instructions for the LI-670 Flow Control Unit.

LI-700 Transient Porometer

LI-700 Transient Porometer

Instruction manual for the LI-700 Transient Porometer.

LI-800 Gashound CO2 Analyzer

LI-800 Gashound CO2 Analyzer Instruction Manual

Instruction manual for the LI-800 Gashound CO2 Analyzer.

LI-800 GasHound Instruction Manual Addendum

LI-800 Gashound Manual Addendum.

Installation Instructions for GasHound Model LI-800 Software Version 1.7

Instructions for installing the version 1.7 software update for the LI-800 Gashound.

Windows Interface Software for LI-800 GasHound CO2 Analyzer

Windows interface software for the GasHound model LI-800 CO2 Analyzer.

Air Pumps and Accessories for LI-COR Gas Analyzers: Suggested Parts and Vendors

Suggested parts and vendors for air pumps and other accessories needed to flush the sample cells of many LI-COR closed-path gas analyzers.

Effects of Temperature, Pressure, and Water Vapor on Gas Phase Infrared Absorbtion by CO2

Article that describes the effects of temperature, pressure, and water vapor on absorption of infrared energy by carbon dioxide.

FAQ about the LI-800 Source, Dectector, and Optical Path

FAQ about replacing the source/detector and optical path in the LI-800 Gashound.

LI-800 Gashound Source/Detector Replacement Instructions

Instructions for replacing the source and detector in the LI-800 Gashound.

Measuring pCO2 and Dissolved Inorganic Carbonates in Water

Application note that describes how to use LI-COR analyzers in systems that measure the partial pressure of CO2 (pCO2) and dissolved organic carbonates in water.

Measuring Pressure Out of the DACs on the LI-800 CO2 Analyzer

Frequently asked questions about measuring pressure with the LI-800 CO2 Analyzer.

Source, Detector, and Optical Path Replacement Instructions

Instructions for replacing the source, detector, and optical path in the LI-800, LI-820, LI-840, and LI-8100A gas analyzers.

LI-1200 Minimum Dataset Recorder

LI-1200 Minimum Dataset Recorder

Instruction manual for the legacy LI-1200 Minimum Dataset Recorder.

LI-1401 Agro-Meteorological Station

LI-1401 Agro-Meteorological Station instruction manual

Instruction and assembly manual for the LI-1401 Agro-Meteorological Station.

LI-1600 Steady State Porometer

1600-10 Storage Module System Instruction Manual

Instruction manual for the 1600-10 Storage Module System for use with the LI-1600 Steady State Porometer.

LI-1600 Steady State Porometer Instruction Manual

Instruction manual for the LI-1600 Steady State Porometer.

LI-1600 Steady State Porometer Service Manual

Service manual for the LI-1600 Steady State Porometer.

Sources of Error in the Estimation of Stomatal Conductance and Transpiration from Porometer Data

This application note describes common sources of errors in conductance estimates when using porometers.

LI-1800UW Underwater Spectroradiometer

LI-1800UW Underwater Spectroradiometer Instruction Manual

Instruction manual for the legacy LI-1800UW underwater spectroradiometer.

LI-2010S Miniature Shadow Band

LI-2010S Miniature Shadow Band Instruction Manual

Instruction manual for the LI-2010S Miniature Shadow Band.

LI-2020 Automatic Solar Tracker

LI-2020 Automatic Solar Tracker Instruction Manual

Instruction manual for the LI-2020 Automatic Solar Tracker.

LI-3000 Leaf Area Meter

LI-3000 Portable Area Meter Instruction Manual

Instruction manual for the legacy LI-3000 Portable Area Meter.

LI-3000 Portable Area Meter Service Manual

Service …manual …for …the …LI-3000€…Portable …Leaf …Area€…Meter.

LI-3000A Leaf Area Meter

LI-3000A Service Manual

Service manual for the LI-3000A Portable Leaf Area Meter and 3000A-01 Readout Console.

LI-3000A Portable Area Meter Brochure

Brochure for the LI-3000A Portable Leaf Area Meter.

LI-3000A Portable Leaf Area Meter Communications with HyperTerminal

This technical tip describes how to communicate and download data from the LI-3000A Leaf Area Meter to a computer using HyperTerminal.

LI-3100 Leaf Area Meter

LI-3100 Area Meter Instruction Manual

LI-3100 Area Meter instruction manual.

LI-3100 Area Meter Service Manual

Service manual for the LI-3100 Area Meter.

LI-6000 Portable Photosynthesis System

LI-6000 Portable Photosynthesis System Instruction Manual

Instruction manual for the legacy LI-6000 Portable Photosynthesis System.

6000-01 Gas Calibration Cylinder instruction manual

Instruction manual for the 6000-01 Gas Calibration Cylinder.

6000-09 Soil Respiration Chamber instruction manual

Instruction manual for the 6000-09 Soil Respiration Chamber.

6000-16 Chamber Fan

Information about the 6000-16 replacement chamber fan for the 6000-10 Four Liter Chamber.

C6000 Program Instructions

The C6000 program recalculates LI-6000 data pages using the LI-6200 equation set to provide more reliable estimates of photosynthesis and conductance.

LI-6200 Portable Photosynthesis System

LI-6200 Primer

Primer manual for getting started with the LI-6200 Portable Photosynthesis System.

6200-25 Software for the LI-6200 Portable Photosynthesis System

Support software for the LI-6200 Portable Photosynthesis System.

6200-25 User Guide for the LI-6200 Portable Photosynthesis System

Manual for the legacy LI-6200 Portable Photosynthesis System computer software.

6200-28 Software for the LI-6200 Portable Photosynthesis System

6200-28 COMPCO2.EXE software for use with the LI-6200 Portable Photosynthesis System and the LI-6251 CO2 Analyzer.

6200-29 Software for the LI-6200 Portable Photosynthesis System

Support software for the LI-6200 Portable Photosynthesis System, performs calculations as described in Application Note #105.

A Protocol for Measuring Assimilation Rate versus Internal CO2 Concentration Using the LI-6200

Application note for the LI-6200 Portable Photosynthesis System entitled 'A Protocol for Measuring Assimilation Rate vs Internal CO2 Concentration Using the LI-6200'.

LI-6200 Condensed Reference Manual

LI-6200 Portable Photosynthesis System condensed reference manual for software version 2.0.

LI-6200 Portable Photosynthesis System Communications with HyperTerminal

This FAQ explains how to communicate and send data from the LI-6200 using the HyperTerminal program.

LI-6200 Pump Diaphragm Replacement

Instructions for replacing the diaphragm of the LI-6200 pump.

LI-6200 Technical Reference

Technical reference manual for the LI-6200 Portable Photosynthesis System.

Measuring Small Volumes of CO2 with the LI-COR LI-6200 System

Application note for the LI-6200 Portable Photosynthesis System entitled 'Measuring Small Volumes of CO2 with the LI-COR LI-6200 System'.

Modifying the LI-6200 for Measuring High CO2 Concentrations and High Soil CO2 Fluxes

This application note describes a simple modification which makes it possible to use the LI-6200 system for measuring absolute CO2 concentrations in the range of 0 to about 15,000 ppm with an accuracy of about 1%.

Scrubbing Chemicals in LI-COR Gas Analyzers

Note describing a change in chemical scrubbers used in gas analyzers.

Revisiting the LI-6200 Equations

This application note describes the effect of errors in the equation derivations implemented in the LI-6200 under conditions of rapidly changing chamber humidity and low net carbon exchange.