Plant Soil Moisture Vacuum Extraction System (LI-2000)

To measure the isotopic content of water in plants and soil, it is necessary to extract the water without fractionation. In the past 40 years, researchers have invented many extraction techniques, including mechanical extrusion, centrifugation of immiscible liquids, azeotropic distillation, vacuum distillation, and so on. Among these methods, vacuum distillation has been increasingly used due to its simple operation and the absence of toxic solvents, gradually becoming the standard method for water extraction.

LI-2000 is a plant soil moisture vacuum extraction system produced by LICA in 2010, based on the summary of past successful experiences and shortcomings, through extensive material selection, multiple tests, and repeated improvements. It is used as a supporting equipment for water isotope analyzers.

characteristic:

The extraction rate reaches over 98%;

Integrated temperature control system, automatic power-off for overheating, fire prevention;

Metal ultra vacuum joint, flexible assembly, no need for on-site glass welding;

Stainless steel main pipe, anti-collision and shatterproof, durable and long-lasting;

Select glass components that can withstand temperature fluctuations ranging from -200 ℃ to+150 ℃ to ensure high sealing performance of the system under extreme temperature changes;

Digital high vacuum sensors and reading meters provide stable and reliable data.

Performance indicators:

Vacuum components:

Vacuum pump pumping speed: 3 L/s

System ultimate vacuum pressure: 0.55 pa

System level leakage rate: 0.02 pa/s

Vacuum gauge range: 1 × 10-2~1 × 105 pa

Vacuum gauge accuracy: ± 10% of reading

Vacuum connection: Swagelock quick couplings, KF25, KF16 flanges

Temperature control:

Low temperature cooling: liquid nitrogen cooling

Heating strip: adjustable from 20~99 ℃, typical application at 70 ℃

Heater: adjustable from 20~99 ℃, typical application at 95 ℃

High temperature insurance: automatic power-off above 145 ℃

Temperature controller accuracy: better than 2 ℃

Heating rate: reach the set temperature within 180 seconds

Heating, condensing, and sample preservation test tubes: resistant to rapid cooling and heating- 200~150 ℃

System performance:

Extraction efficiency: 20-40 samples/8 hours (simultaneous extraction of 5 channels)

Liquid nitrogen consumption: 15-20 liters/8 hours

System power consumption:< 1500 W (including vacuum pump, heating belt, heating tube)

Size and weight:

180 cm (W) x 100 cm (H) x 38 cm (D), 50 kg (complete system)

Ordering information:

Model:LI-2000

manufacturer:

China, LICA