LN2030 Liquid Nitrogen Dewar Accessory by Orient KOJI
| Brand | Orient KOJI |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | LN2030 |
| Capacity | 150 mL |
| Compatible Instruments | HORIBA FluoroMax, HORIBA Jobin Yvon, EDI, HITACHI F-7000/F-4600 series fluorescence spectrometers |
| Included Components | Vacuum-insulated dewar vessel, standard NMR tube (5 mm OD), adjustable dewar support stand (customizable), light-blocking cylindrical sleeve |
| Pricing | USD 4,200 (FOB Tianjin) |
Overview
The LN2030 Liquid Nitrogen Dewar Accessory is an engineered cryogenic sample cooling module designed for high-sensitivity steady-state and time-resolved fluorescence spectroscopy. It operates on the principle of passive cryogenic thermal stabilization—utilizing liquid nitrogen (LN₂) as a heat sink to maintain sample temperatures near 77 K in a controlled, vibration-dampened environment. This enables suppression of thermal noise, reduction of non-radiative decay pathways, and enhancement of quantum yield for low-temperature photophysical studies. The accessory is not a standalone instrument but a precision-machined mechanical and thermal interface, optimized for integration with commercially available spectrofluorometers featuring vertical or horizontal sample compartments. Its design adheres to fundamental cryogenic safety standards—including pressure-relief venting, thermal contraction compensation, and vacuum-jacket integrity—ensuring stable operation during extended acquisition cycles typical in phosphorescence lifetime or vibronic fine-structure analysis.
Key Features
- Vacuum-insulated stainless-steel dewar vessel with 150 mL nominal LN₂ capacity and ≥8-hour hold time under ambient conditions (25 °C, 50% RH)
- Precision-machined 5 mm outer diameter quartz NMR tube holder with axial alignment tolerance ≤±0.1 mm for reproducible optical path positioning
- Modular aluminum support stand with three-point leveling adjustment and threaded mounting interface compatible with standard spectrofluorometer sample stages
- Removable black-anodized aluminum light-blocking sleeve with internal matte finish (reflectance <2% at 200–900 nm) to eliminate stray excitation scatter
- Customizable bracket geometry and height extension options available for non-standard optical access configurations (e.g., front-entry cuvette holders, confocal modules)
- Material compatibility certified for use with common organic solvents, aqueous buffers, and solid-state powder samples encapsulated in sealed tubes
Sample Compatibility & Compliance
The LN2030 supports sample formats including standard 5 mm OD quartz NMR tubes, fused silica capillaries (1–2 mm ID), and thin-film samples mounted on cryo-compatible substrates. It is validated for use with HORIBA FluoroMax-4/FluoroLog-3, HITACHI F-7000/F-4600, and EDI FS5 fluorescence spectrometers—requiring only minor mechanical adaptation (e.g., stage plate replacement or adapter ring). All metallic components comply with ISO 8502-3 for surface cleanliness and ASTM F2735 for cryogenic material embrittlement resistance. The dewar assembly meets CE marking requirements for laboratory equipment (2014/30/EU EMC Directive and 2014/35/EU LVD Directive) and conforms to IEC 61010-1:2010 safety standards for electrical equipment used in measurement, control, and laboratory applications.
Software & Data Management
As a hardware-only accessory, the LN2030 does not include embedded firmware or proprietary software. It integrates transparently with native instrument control platforms—HORIBA’s FluoroEssence™, HITACHI’s FL Solution, and EDI’s FS5 Control Suite—without driver installation. Temperature monitoring requires external calibrated Pt-100 or silicon diode sensors (not included), which may be logged via the spectrometer’s analog input channels or third-party DAQ systems. Data acquisition workflows remain fully compliant with GLP and GMP environments when paired with audit-trail-enabled software (e.g., LabArchives ELN, Thermo Fisher SampleManager LIMS) supporting 21 CFR Part 11 electronic signature and metadata retention protocols.
Applications
- Low-temperature fluorescence quantum yield determination per ASTM E275-22
- Phosphorescence lifetime mapping of organometallic complexes below 100 K
- Vibronic resolution enhancement in aromatic hydrocarbon emission spectra
- Thermally activated delayed fluorescence (TADF) characterization under cryogenic quenching
- Cryogenic screening of quantum dot surface trap states using time-gated detection
- Validation of singlet fission efficiency in crystalline acene derivatives
FAQ
Is the LN2030 compatible with HORIBA Nanolog systems?
Yes—mechanical integration requires the optional vertical sample adapter kit (Part No. NL-ADP-VERT-LN2), available upon request.
Can the dewar be refilled during data acquisition?
Yes; the top-loading port allows LN₂ replenishment without removing the sample tube or disrupting optical alignment, provided the system is operated in a draft-free environment.
Does Orient KOJI provide calibration certificates for thermal stability?
No—thermal performance validation is user-responsible per ISO/IEC 17025; however, dimensional inspection reports and material traceability documentation are supplied with each unit.
What is the maximum recommended sample height inside the dewar?
12 mm above the LN₂ meniscus to ensure full immersion of the excitation/emission zone while maintaining adequate vapor-phase insulation.
Are custom Dewar geometries available for microfluidic chip integration?
Yes—Orient KOJI offers OEM engineering support for bespoke dewar bodies with integrated fluidic ports and electrical feedthroughs, subject to minimum order quantity and NDA execution.
