Automatic Nitrogen Evaporator

I. Product Description

The HD-QD4G automatic multi-functional dry nitrogen concentrator is a new concentration and constant-volume product developed by our company according to laboratory requirements, from perspectives of convenience, safety, speed and stability. It avoids the drawback of conventional water-bath heating evaporation that can contaminate samples, ensuring sample safety and accuracy. It features unattended operation, accurate constant volume and large-batch concentration, with multi-group data storage, realizing fully automatic quantitative and batch concentration and making the tedious concentration process flexible, worry-free, efficient and safe.

II. Main Features

Sample quantity: 1~4 samples can be concentrated simultaneously.

Concentrating vial volume: 100 mL or 150 mL.

Endpoint detection: each working channel is equipped with an optical sensor for automatic, independent endpoint detection — no manual supervision required.

Endpoint volume: the automatically sensed constant volumes are 1.0 mL, 0.5 mL or near-dry (about 0.1 mL; constant-volume specification optional); with appropriately extended time the solvent can also be blown dry. Concentrating vials of different specifications can be used crosswise at the same time.

Working parameters can be set arbitrarily, controlled and displayed in real time: the main working parameters are temperature, nitrogen purge time and gas pressure.

Temperature setting: room temperature ~ 95℃ (±0.5℃).

Nitrogen purge time: 0~9999 sec.

Gas pressure: the purge working pressure can be set arbitrarily in the range 0~0.50 MPa; the instrument has a built-in automatic pressure-regulating device that automatically adjusts to the set purge pressure and keeps it constant, unaffected by the sudden opening, closing or number of working channels (samples). External nitrogen pressure (nitrogen cylinder regulator gauge pressure) range: 0.10~0.50 MPa; external limit gas pressure: 0.7 MPa.

Gas consumption: approx. 500 mL/min per channel at purge pressure (0.10 MPa) (approx. 17 cfm).

Constant-volume sensitivity: 10 levels adjustable; accurate concentration and constant-volume for solvents of different colors or transmittance.

Control mode: manual or intelligent control of the purge endpoint as required.

Alarm: displayed on lid opening, completion of concentration or insufficient nitrogen pressure.

If the lid is opened during operation, the instrument automatically and intelligently memorizes the working state and continues the previously interrupted program without re-setting the working parameters and channels.

All rubber parts are made of plasticizer-free silicone to avoid contamination of samples by the instrument.

Flexible working-parameter setting and convenient sample loading/removal, eliminating tedious preparation and reducing the toxicity of organic solvents to operators.

The enclosed structural design and built-in powerful exhaust system discharge organic volatiles and water vapor together, avoiding the volatilization and diffusion of organic solvents in the experimental space, protecting operators' health and avoiding environmental pollution.

The instrument uses dry heating, making it convenient for users to replace the heating water.

Input power: 220V/60Hz.

Instrument weight: 20 kg.

III. Technical Parameters