Product Overview
TPS‑NIGS1890 Series Near Infrared Spectrometer (NIR) is a high‑performance benchtop near‑infrared analytical instrument, consisting of two configurations: NIGS1892 base version and NIGS1895 high‑end version. Adopting aberration‑corrected holographic gold‑plated grating and two‑stage TEC‑cooled InGaAs detector, it delivers high sensitivity, low noise and excellent long‑term stability. It enables fast, non‑destructive composition testing without complicated sample pre‑treatment. Widely applied for agriculture, food, feed, pharmaceutical, material and chemical industries. Free modeling service is available for customized test requirements.

Main Advantages
• High‑efficiency aberration‑corrected holographic gold‑plated grating with >85% NIR diffraction efficiency, low stray light and high‑resolution imaging. Simplified optical structure ensures outstanding stability.
• Two‑stage TEC‑cooled InGaAs detector cooled down to ‑20 °C, reducing dark current and noise; low‑noise readout circuit realizes high SNR performance.
• Ultra‑long service‑life light source over 10,000 hours for routine daily laboratory use.
• Bottom‑illumination rotating sample cup for representative and repeatable measurement results.
• Rich communication interfaces: Wi‑Fi, Bluetooth, USB, RS232 and Ethernet for flexible data transmission and system integration.
• Tool‑free lamp replacement: light‑source can be replaced without instrument disassembly.
• Built‑in reference & wavelength calibration standards guarantee wavelength accuracy and stable measuring performance.
• Optional built‑in 10.1‑inch color touch‑screen (NIGS1895 only), intuitive UI for fast data acquisition, processing and export.

Application Areas
Agriculture, Food, Feed, Pharmaceuticals, Materials, Chemicals

Typical Test Items for Common Samples
Wheat: Moisture, crude protein, crude fat, crude fiber, ash, wet gluten, Zeleny sedimentation
Corn: Moisture, crude protein, crude fat, crude fiber, ash, starch, phosphorus, amino acids
Rice: Moisture, crude protein, amylose, eating quality, gel consistency
Wheat flour: Moisture, crude protein, ash, wet gluten, sedimentation value, water absorption
Soybean: Moisture, crude protein, crude fat, water‑soluble protein, fatty acid value
Rapeseed: Moisture, crude protein, crude fat, erucic acid, glucosinolates, fatty acids
Soybean meal: Moisture, crude protein, crude fat, crude fiber, ash, protein solubility, amino acids
Fish meal: Moisture, crude protein, crude fat, ash, salt, calcium, phosphorus, amino acids
DDGS: Moisture, crude protein, crude fat, crude fiber, ash, calcium, phosphorus
Broiler feed: Moisture, crude protein, crude fat, ash, calcium, phosphorus, salt
Shrimp feed: Moisture, crude protein, crude fat, ash, calcium, phosphorus
Alfalfa hay: Moisture, crude protein, ADF, NDF, calcium, phosphorus, IVPD
Gasoline: RON, MON, density, olefins, aromatics, distillation range, sulfur

More detection models are available upon consultation. Free modeling service is provided.

Technical Specifications
| Specification | NIGS1892 | NIGS1895 |
|—|—|—|
| Measurement Mode | Diffuse Reflection | Diffuse Reflection |
| Wavelength Range | 1000‑1800 nm; optional 1000‑2500 nm | 1000‑1800 nm; optional 1000‑2500 nm |
| Spectral Bandwidth | 11 nm | 11 nm |
| Wavelength Accuracy | ≤0.2 nm | ≤0.2 nm |
| Wavelength Repeatability | ≤0.05 nm | ≤0.05 nm |
| Stray Light | ≤0.1% | ≤0.1% |
| Absorbance Noise | ≤0.00003 AU | ≤0.00003 AU |
| Data Interfaces | RS232, USB, Bluetooth, Wi‑Fi, Ethernet | RS232, USB, Bluetooth, Wi‑Fi, Ethernet |
| Display | None | 10.1‑inch color touch screen |
| Battery | Not available | Optional, 5‑hours working time |
| Operating Temperature | 0‑40 °C | 0‑40 °C |
| Operating Humidity | 5‑85% | 5‑85% |
| Supply Voltage | 100‑240V AC, 50/60Hz | 100‑240V AC, 50/60Hz |
| Max Power | 50W | 50W |
| Dimension | 500×300×280 mm | 500×300×280 mm |
| Weight | 20 kg | 20 kg |