Nitrogen Evaporator / Sample Concentrator, NEC90-R80W

The nitrogen evaporator features a needle-following function to maintain the optimal distance between needle tips and the liquid level. It also ensures that the gas above the samples is always protected by positive-pressure nitrogen gas to exclude oxygen and moisture from the air, thereby achieving efficient and parallel concentration of all samples.

Application

• Environment: Sample concentration in analysis of water, soil and gaseous samples;
• Food: Sample concentration in detection of pesticide and veterinary drug residues;
• Others: Biochemical analysis, pharmaceuticals, polymer materials;

Features

Multi-channel Design

• Individual gas flow control for each channel.
• Quick-release nitrogen needles for effortless cleaning and maintenance, greatlyenhancing the user experience.

Transparent Water Bath Tank

• Features three-sided transparent glass windows to maximize the viewing area of the sample rack for clear observation and monitoring.

Good Parallelism of Nitrogen Blowdown

• Utilize high-strength, diameter-reduced nitrogen needles to ensure the needle tips are centered in the sample tubes.
• Each nitrogen blowing needle tip has the same inner diameter, ensuring the sameflow rate of each needle tip and thus providing good consistency for sample evaporation. Needles tracing liquid level, maintain optimal distance for full concentration.

High-throughput & Effective-performance

• Large batch processing capability, simultaneously evaporate up to 80 samples.
• Nitrogen blowing needles automatically descend at a constant speed to trace the liquid level during concentration. Users can directly set the required descending speed in the software, range of vertical descending distance ≥160mm.
• The nitrogen flow rate is automatically regulated by an electronic proportional valve. Users can set and adjust the flow via the software, covering a range of 0 to 3.0 L/min with a resolution of 0.1 L/min.

Intelligent Process Control & Operational Versatility

• The water bath tank integrates a liquid level sensor with water inlet and outlet. The software controls water inflow/outflow and determines precise refill and drain endpoints via the sensor.
• The nitrogen blowing moduleautomatically descends to seal against the water bath during evaporation and retracts upon completion.
• Monitor and adjust the needle height via the screen at any point during the process, with 0.1 mm precision.

Comprehensive Safety Protection

• Built-inexhaust fan with an active exhaust pipeline to minimize the risk of solvent exposure.
• Separated nitrogen blowing module and water bath heating modules to maximize operator safety.
• Automatic gas pressure detectionwith low-pressure shutdown; includes alarms for insufficient water and dry-heating protection.
• Double-layered glass water bath: Providesgood thermal insulation, protecting users from high-temperature surfaces.
• Anti-pinch function: It can sensehands or other obstructions and pause the descent before the nitrogen module reaches the water bath.

Specification