Micro Nitrogen Analyzer

TN‑410 Micro Nitrogen Analyzer

The TN‑410 micro nitrogen analyzer by Goodwill features an integrated compact design for simple operation and accurate analytical results. It is suitable for ultra‑micro total‑nitrogen / total‑sulfur determination for nearly all gaseous, liquid and solid samples. Widely deployed in pharmaceutical, chemical, environmental, food‑testing and scientific‑research laboratories, it has earned positive user feedback for its innovative design, reliable performance and user‑friendly workflow.

Performance Features

• - Adopts chemiluminescence‑based total‑nitrogen measurement. Delivers simple operation, high sensitivity, broad measuring range and precise test results.
• - Standard‑equipped with auto constant‑speed liquid autosampler for stable, low‑noise sample‑injection speed. A 70‑position automatic liquid autosampler is available as an optional accessory.
• - Equipped with a gas injector with atmospheric‑balance valve. It eliminates injection‑volume deviation caused by varying sample pressure and guarantees consistent pressure and volume for every sample injection.
• - Sample pre‑vaporisation technology prevents bubble formation within the quantitative loop, thus avoiding injection‑volume errors.
• - For solid and viscous samples, an optional solid platinum‑boat sampler is offered. It eliminates air interference and component adsorption; the platinum boat provides lifelong service life.
• - Single‑tube extended membrane dryer overcomes the limitation of multi‑tube membrane dryers, where carbon deposits cannot be cleaned. It delivers superior drying efficiency.
• - A small non‑adsorptive filter is fitted at the outlet of the cracking tube. Easily replaceable, it protects the dryer and detector against contamination induced by carbon deposition.
• - Platinum‑rhodium alloy dual‑tip thermocouple temperature sensor. Compared with conventional K‑type thermocouples, it supports a far wider working‑temperature range with service life extended by more than 50 times. The detection point coincides with the control point to ensure accurate temperature control.
• - Fully‑automatic thermal‑conductivity‑based mass‑flow controller. All gas flows are regulated via PC software without manual adjustment. Gas‑supply‑pressure fluctuations will not alter gas‑flow rates, ensuring identical flow conditions for sample measurement and calibration for reliable quantitation. ‑ Highly intuitive software interface consolidates all parameters and functions on one single screen without tab switching. Calibration, sample analysis and other operating‑condition parameters are displayed within the same workspace. Both Chinese and English software versions are provided.

Technical Specifications

‑ Measurement principle: Micro‑nitrogen determination for liquid and solid samples via combustion, modal drying‑purification, chemiluminescence and photoelectric detection.

‑ Measuring range: 0.1 ppm ~ 1000 ppm N ‑ Repeatability: ≤2.5 % (for concentrations above 100 ppm)

‑ Analysis time: 2‑3 min per sample ‑ Combustion furnace temperature: 1250 °C

‑ Carrier gas: Argon, 0.2 MPa, 99.99 %, 200 mL/min

‑ Combustion gas: Oxygen, 0.2 MPa, 99.95 %, 650 mL/min

‑ Gas mass‑flow meter: 0‑500 mL/min; accuracy: 1.5 %

‑ Injection modes: Standard auto constant‑speed liquid autosampler; optional 70‑position fully‑automatic autosampler

‑ Detector: Photomultiplier tube; voltage and amplification gain are automatically controlled by software.