Chambers and light sources
The LI-6800 will include one or more of the following chambers and light sources.
Fluorometer chamber
Part Number 6800-01A
The 6800-01A fluorometer is a combined chamber and light source that induces and measures fluorescence from a sample. It includes inserts to limit the aperture to 6 cm2 or 2 cm2. It is also the light source for the aquatic chamber. See Measuring chlorophyll a fluorescence for details. The fluorometer includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Fluorometer Chamber | 1 | 9968-266 |
| 6 cm2 Aperture Inserts | 2 | 6800-50 |
| 2 cm2 Aperture Inserts | 2 | 6800-51 |
| Fluorometer Spares Kit | 1 | 9968-270 |
| O-ring; 6×1.5 mm; for Leaf Temperature Thermocouple | 1 | 192-14314 |
| O-ring; 35×1.5 mm; for Apertures | 2 | 192-16851 |
| 6 cm2 Aperture AP1 Gaskets (white upper/lower) | 2 | 6568-512 |
| 2 cm2 Aperture AP Gaskets (white upper/lower) | 2 | 6568-566 |
| 2 cm2 Aperture PE Gasket (white upper) | 4 | 6564-202 |
| 2 cm2 Aperture NP Gasket (black lower) | 4 | 6564-196 |
| Fluorometer Gasket Kit | 9968-208 | |
| 6 cm2 Aperture PE Gasket (white upper) | 4 | 6568-436 |
| 6 cm2 Aperture NP Gasket (black lower) | 4 | 6568-413 |
One-sided leaf measurement kit
Part Number 9968-013
The one-sided leaf kit is available to isolate one side of a leaf for one-sided leaf measurements using the fluorometer. The leaf kit is described in licor.com/support/LI-6800/topics/one-sided-leaf-measurements.html.
Small leaf chamber (3×3 cm)
Part Number 6800-12A
The small chamber features a transparent Propafilm™ top window. It accommodates one fine wire thermocouple to measure leaf temperature. A GaAsP light sensor measures PAR in the chamber. It is compatible with the 3×3 cm light source. Aperture inserts limit the opening to 3×3 cm, 2×3 cm, or 1×3 cm. See Installing the small leaf chamber for details. The chamber includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-264 |
| 1×3 cm Aperture Inserts | 2 | 9968-294 |
| 2×3 cm Aperture Inserts | 2 | 9968-295 |
| 3×3 cm Aperture Inserts | 2 | 9968-296 |
| Spares Kit | 1 | 9968-269 |
| O-ring; 6×1.5 mm | 1 | 192-14314 |
| O-ring; 48×1.5 mm; for Apertures | 2 | 192-16680 |
| Light Source Gaskets2 | 3 | 6568-071 |
| 3×3 cm Aperture AP Gaskets (white upper/lower) | 2 | 6568-511 |
| 2×3 cm Aperture AP Gaskets (white upper/lower) | 2 | 6568-562 |
| 1×3 cm Aperture AP Gaskets (white upper/lower) | 2 | 6568-560 |
| 3×3 cm Aperture PE Gasket (white upper) | 4 | 6568-429 |
| 3×3 cm Aperture NP Gasket (black lower) | 4 | 6568-384 |
| 2×3 cm Aperture PE Gasket (white upper) | 4 | 6564-156 |
| 2×3 cm Aperture NP Gasket (black lower) | 4 | 6564-028 |
| 1×3 cm Aperture PE Gasket (white upper) | 4 | 6568-584 |
| 1×3 cm Aperture NP Gasket (black upper) | 4 | 6568-583 |
Small light source (3×3 cm)
Part Number 6800-02
The 3×3 cm light source mounts directly on top of the clear-top leaf chamber. Includes the light source spares kit (part number 9968-206). 3×3 cm light source gaskets are included with the clear-top chamber spares kit. See Connecting the small light source.
| Description | Quantity | Part Number |
|---|---|---|
| Gasket kit | 1 | 9968-206 |
| Light source gasket | 3 | 6568-071 |
| Leaf gasket (3×3 cm; black) | 4 | 6568-384 |
| Leaf gasket (3×3 cm; white) | 4 | 6568-429 |
Large leaf and needle chamber (6×6 cm)
Part Number 6800-13
The 6×6 cm chamber features a clear Propafilm™ top window. It holds two fine wire thermocouples to measure the leaf temperature. An internal, upward facing GaAsP light sensor measures PAR in the chamber. It is compatible with the 6×6 cm light source. See Installing the large leaf chamber for details. The chamber includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-159 |
| Large Light Source Adapter Plate | 1 | 9968-209 |
| Large Light Source Chamber Adapter Kit | 1 | 9968-189 |
| Adapter Plate | 2 | 9868-209 |
| Mounting Screws; M3×0.5 8 mm | 4 | 150-07475 |
| Bottom Chamber Light Source Adapter Kit | 1 | 9968-311 |
| Light Source Spacer | 1 | 9868-245 |
| Screws; M3×0.5 10 mm | 4 | 150-15307 |
| Spares Kit | 1 | 9968-207 |
| O-ring; 6×1.5 mm | 1 | 192-14314 |
| O-ring; AS-154 Viton 75 | 1 | 192-12205 |
| 6×6 cm AP3 Gasket (white upper/lower) | 2 | 6568-513 |
| 6×6 cm NP Gasket (black lower) | 3 | 6568-210 |
| 6×6 cm PE Gasket (white upper) | 6 | 6568-463 |
| Thermocouple Hole Plug | 2 | 6568-523 |
| Propafilm Kit | 1 | 9964-151 |
Large light source (6×6 cm)
Part Number 6800-03
The 6×6 cm light source mounts directly on top of the 6×6 clear-top chamber, small plant chamber, or the bryophyte chamber. See Connecting the large light source for details.
| Description | Quantity | Part Number |
|---|---|---|
| Large Light Source (6×6 cm) | 1 | 9968-089 |
| Spares Kit | 1 | 9968-249 |
| Light Source Gasket | 1 | 6568-199 |
| Screwdriver; 6 mm Flat | 1 | 611-16424 |
| Mounting Screws; M3×0.5; 8 mm | 4 | 150-07475 |
| Retaining Washers | 2 | 144-15345 |
Leaf chamber springs
Three types of chamber closure springs are available to close chambers with different levels of tension. In general, the springs that are installed on the chamber at the factory will work with that chamber under most circumstances. If, however, you are measuring delicate plant material, you may want to use the gentler springs. Be aware that the low pressure springs may result in more leaks around the leaf chamber gaskets.
| Description | Color | Part Number |
|---|---|---|
| Low Pressure Springs; for delicate leaves | White | 9968-240 |
| Medium Pressure Springs; for most leaves; default springs on the fluorometer and 3×3 cm chamber | Silver | 9968-131 |
| High Pressure Springs; for the 6×6 cm chamber | Black | 9968-239 |
Sprig adapter blocks
Part Number 9968-271
The sprig adapter blocks attach to the 6×6 cm clear-top chamber, increasing the volume to accommodate sprigs and shoots with whorled leaves. The blocks can be used in ambient lighting conditions and with one or two large light sources. See Conifer sprig kit for details. The sprig kit includes the following parts:
| Description | Quantity | Part Number |
|---|---|---|
| Sprig Adapter Block with Film (upper) | 1 | 9868-586 |
| Sprig Adapter Block (lower) | 1 | 9868-585 |
| O-rings; AS-154 Viton 175 | 2 | 192-12205 |
| Block Screws; Panhead M3×30 | 8 | 150-16889 |
| Light Source Screws; Countersunk M3×30 | 1 | 150-06115 |
Light source extension cable
Part Number 9968-243
The light source extension cable is used to connect and operate a light source from the LI-6800 console ACCESSORY connector, which makes it possible to operate two light sources simultaneously. See Using two light sources simultaneously for details.
Small plant chamber
Part Number 6800-17
The small plant chamber is to measure gas exchange from whole Arabidopsis thaliana plants or other small, prostrate plants in 65 mm (2.5 inch) pots or 38 mm (1.5 inch) Cone-tainers™. The small plant chamber features a transparent Propafilm® cover for measurements under ambient light. It is compatible with the 6×6 cm light source, which enables measurements under controlled lighting with any combination of red, green and, blue light. See Small plant chamber for details. The chamber includes a spares kit (part number 9968-231) with the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-280 |
| Chamber Feet | 2 | 9968-253 |
| Spares Kit | 1 | 9968-231 |
| Bottom plate for 38 mm Cone-tainers™ | 1 | 9868-555 |
| Cone-tainers™; 38 mm (1.5") Diameter | 5 | 610-09645 |
| Valve Assembly for Cone-tainers™ | 2 | 9968-261 |
| Bottom Plate for 65 mm Pots | 1 | 9868-554 |
| Flower Pots; 65 mm (2.5") Diameter | 6 | 610-09646 |
| Valve Assembly for 65 mm Pots | 2 | 9968-262 |
| Propafilm™ Kit | 1 | 9964-151 |
| Gasket for 65 mm Pots | 1 | 6564-279 |
| O-ring; AS-150 | 2 | 192-09262 |
| O-ring; AS-128 | 2 | 192-12880 |
| O-ring; AS-041 | 1 | 192-05062 |
| O-ring; 6×0.5 mm | 1 | 192-14314 |
| Screws; 4-40 | 1 | 122-00004 |
| Large Light Source Chamber Adapter Kit | 1 | 9968-190 |
| Adapter Plate | 1 | 9868-449 |
| Screws; M3×0.5 8 mm; for mounting | 4 | 150-13642 |
Bryophyte chamber
Part Number 6800-24
The bryophyte chamber is used to measure CO2 and H2O gas exchange from mosses, hornworts, liverworts, and lichens. The chamber holds loose material in a shallow well during the measurement. It features a clear Propafilm® top for measurements under ambient lighting conditions. It is compatible with the 6×6 cm light source for measurements under controlled lighting with any combination of red, green and, blue light. See Installing the bryophyte chamber for details. They bryophyte chamber includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-281 |
| Main Chamber Assembly | 1 | 9968-197 |
| Chamber Bottom Assembly | 1 | 9968-263 |
| Large Light Source Small Plant Adapter Kit | 1 | 9968-190 |
| Accessories and Spares Kit | 1 | 9968-248 |
| Mesh Screen | 1 | 197-09025 |
| Short Risers | 4 | 170-04629 |
| Short Riser Screws; M3-8 | 4 | 150-13642 |
| Tall Risers | 4 | 170-16503 |
| Tall Riser Screws; M3-25 | 4 | 150-15454 |
| Chamber Bottom Plate | 1 | 9868-550 |
| Chamber Bottom Screws; M4-12 | 4 | 150-14476 |
| Flat Washers; #4 5/16 | 8 | 167-00155 |
| Propafilm Kit | 1 | 9964-151 |
| O-ring; AS-150 BUNA-N 40 | 1 | 192-09262 |
| O-ring; AS-041 VITON 75 | 1 | 192-05062 |
| Chamber Feet | 2 | 9968-253 |
Custom chamber adapter
Part Number 6800-19
The custom chamber interface is used to attach a custom-made chamber to the LI-6800 gas exchange system. The interface has a power supply connector for one powered peripheral, such as a mixing fan. See Installing the chamber adapter for details. The custom chamber adapter ships with the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Custom Chamber Block | 1 | 9968-182 |
| Thermocouple Adapter Cable | 1 | 9968-162 |
| Accessories and Spares Kit | 1 | 9968-254 |
| Auxiliary Power Cable | 1 | 9968-260 |
| Chamber Mounting Screws; M4×0.7 12 mm | 6 | 150-14476 |
| Swagelok Fittings; ¼"; 7/16 - 20 | 2 | 300-16268 |
| Swagelok Ferrule Set' ¼"; Vinyl | 2 | 300-05375 |
| Stainless Steel Plug with O-ring | 3 | 300-16271 |
| 90° Connector; ¼"; 5/16-24 | 2 | 300-16515 |
| Bev-a-line tubing; ¼" diameter; 4.5 meters | 1 | 220-01824 |
| Swagelok Fittings; ⅜"; 7/16 - 20 | 2 | 300-16269 |
| Swagelok Ferrule Set; ⅜"; Vinyl | 5 | 300-16272 |
| O-ring; 15×1.5 mm | 2 | 192-16274 |
| O-ring; 10×1.5 mm | 1 | 192-14435 |
| O-ring; 6×1.5 mm | 1 | 192-14314 |
Insect respiration chamber
Part Number 6800-89
The insect respiration chamber is used to measure gas exchange from insects or small mammals. See Insect respiration chamber for details. The insect chamber includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Custom Chamber Adapter | 1 | 9968-182 |
| Sample Column Tube | 1 | 9960-093 |
| Stainless Steel Plug with O-ring | 3 | 300-16271 |
| Swagelok Fittings; ¼"; 7/16 - 20 | 2 | 300-16268 |
| Swagelok Ferrule Set; ¼"; Vinyl | 2 | 300-05375 |
| Quick-connect union; ¼" | 2 | 300-03123 |
| Bev-a-line tubing; ¼" diameter; 4.5 meters | 1 | 220-01824 |
Aquatic chamber
Part Number 6800-18
When equipped with the aquatic chamber, the LI-6800 can measure gas exchange and chlorophyll fluorescence from samples in aquatic suspension and wet samples. See Measuring assimilation from aquatic samples. The chamber package includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-319 |
| Chamber Stand | 1 | 9968-329 |
| Accessories and Spares Kit | 1 | 9968-333 |
| 30 mL Syringe | 1 | 869-13734 |
| 6" Flat-tipped 14-gauge Stainless Steel Needle | 1 | 259-19172 |
| Orifice Cleaning Tool | 1 | 6568-681 |
| Light Sensor Aperture | 1 | 9868-669 |
| Screws; M3×0.5 8 mm; for Perforated Block | 2 | 150-13642 |
| Screws; M3×0.5 20 mm; for H2O Equilibrator | 4 | 150-14321 |
| Screws; M3×0.5 10 mm; for Chamber to Fluorometer | 2 | 150-14430 |
| Screws; M3×00.5 6 mm; for Chamber Windows | 8 | 150-16669 |
| O-ring; 38×1.5 mm; for Chamber Window Interior | 2 | 192-12027 |
| O-ring; 35×1.5 mm; for Window Exterior | 2 | 192-16851 |
| O-ring; 10×1.5 mm; for Fill Port | 1 | 192-14435 |
| O-ring; 48×1.5 mm; for H2O Equilibrator | 1 | 192-16680 |
| O-ring; 16×1.5 mm; for Chamber-to-Head Manifold | 2 | 192-18247 |
| O-ring; 1.5×1.5 mm; for pH Probe Port | 2 | 192-18702 |
| O-ring; 18×1.5 mm; for Perforated Block | 1 | 192-18703 |
| Septa; 3/8"; Silicone/PTFE | 5 | 300-08998 |
| Hose barbs; 10-32 Threads | 3 | 300-12287 |
| Quick Connect Coupler; 0.165" Male Hose Barb | 1 | 300-07124 |
| Quick Connect Coupler with 0.165" Female Hose Barb | 1 | 300-07125 |
| PTFE Hydrophobic Filter; 1-2 µm; 47 mm Diameter | 5 | 301-18701 |
| PTFE Hydrophobic Filter; Custom 28 mm Diameter | 5 | 6568-658 |
Soil chamber
Part Number 6800-09
The LI-6800 can measure CO2 efflux from soils when equipped with the soil chamber. See Measuring soil CO2 flux for details. The chamber package includes the following items:
| Description | Quantity | Part Number |
|---|---|---|
| Chamber | 1 | 9968-287 |
| Head Mounting Bracket | 1 | 9968-285 |
| Stevens HydraProbe | 1 | 900-19016 |
| Custom Chamber Adapter Block | 1 | 9968-182 |
| Soil Collars | 3 | 6581-044 |
| Accessories and Spares Kit | 1 | 9968-290 |
| Disposable Air Filter | 1 | 301-08119 |
| O-ring; 6 ×1.5 mm | 1 | 192-14314 |
| O-ring; 15 ×1.5 mm | 2 | 192-16274 |
| Bev-a-line Tubing; 2 meters total | 1 | 222-01824 |
| Swagelok Ferrule Set' ¼"; Vinyl | 2 | 300-05375 |
| Swagelok Fittings; ¼"; 7/16 - 20 | 2 | 300-16268 |
| Stainless Steel Plug with O-ring | 4 | 300-16271 |
| Elbow connector; 5/16 - 24 × 1/4 | 1 | 300-16515 |
| Chamber gasket kit (see Accessories kit) | 1 | 9981-198 |