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Beijing Lesi Lianchuang Technology Co., Ltd.

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BrandOntech
OriginGuangdong, China
ModelOntech860
Detection PrincipleCryogenic Preconcentration Coupled with GC/GC-MS
Instrument TypeBenchtop Laboratory Preconcentrator
ComplianceHJ 759–2023, HJ 1078–2019, US EPA TO-14/TO-15, PAMS, and 2019 VOCs Monitoring Guidelines
Sample InletsDual independent standard/injector ports + 13 auxiliary ports (optional 16-port autosampler)
Cooling MethodSolid-state thermoelectric (Peltier) cooling
Trap StagesThree-stage cryofocusing system (Stage I: ambient water removal
Stage IIco-trap purification
Stage IIIdeep-cryogenic focusing at ≤ –40 °C)
Sample CompatibilitySumma canisters, Tedlar® gas bags, and custom pressurized vessels
Software PlatformWindows 7–11 (32/64-bit), FDA 21 CFR Part 11–ready audit trail, GLP-compliant method logging and QA/QC reporting
System DiagnosticsReal-time valve status, pressure/flow monitoring, automatic leak detection (positive/negative pressure modes), graphical pneumatic schematic
Sample PathFully heated (up to 200 °C), SilcoNert®-coated inert flow path from inlet to trap
Concentration FactorUp to 10⁴–10⁵× for C₂–C₁₂ VOCs and SVOCs
Water Removal Efficiency>99.9% H₂O removal while retaining water-soluble polar analytes (e.g., aldehydes, alcohols, acids)
Residual Carryover< method detection limit (MDL) after hot-purge cleaning cycle
Flow ControlHigh-stability mass flow controller (MFC) with adaptive startup compensation algorithm
Method FlexibilityFully programmable sequence control, user-defined time-resolved valve/temperature/flow profiles, built-in HJ 759–2023, TO-14, TO-15, and PAMS templates
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BrandOntech
OriginGuangdong, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
ModelOntech930
PricingAvailable Upon Request
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BrandLeshi
OriginBeijing, China
Model9100FIR
Instrument TypePortable FTIR Spectrometer
Resolution Options0.7 cm⁻¹ (unapodized), 1 cm⁻¹, 2 cm⁻¹, 4 cm⁻¹, 8 cm⁻¹
Scan SpeedAdjustable up to 1 scan/sec (dependent on resolution)
Signal-to-Noise Ratio (SNR)>20,000:1 (peak-to-peak, 60-sec acquisition), >120,000:1 (RMS, 60-sec acquisition)
Wavenumber Accuracy±0.01 cm⁻¹
Operating Sample TemperatureUp to 180 °C (hot-wet gas analysis)
DetectorRoom-temperature DTGS
Reference LaserVCSEL-based stabilization
Internal O₂ SensorZirconia-based electrochemical sensor
Particulate FiltrationDual-stage, <2 µm
Nitrogen Purge InterfacesDual-path (sample cell reverse purge + optical path purge)
Data OutputReal-time spectral & concentration data, Excel-compatible export
ComplianceHJ 919–2017, HJ 920–2017, HJ 1011–2018, HJ 1240–2021, HJ 1330–2023
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BrandJCT
OriginAustria
Product TypePortable Gas Preconditioner with Flame Ionization Detection (FID) for NMHC Analysis
Instrument CategoryEnvironmental Monitoring Instrument / Gas Analyzer
ConfigurationDual-Channel Sample Conditioning System
Flow Range10–100 Nl/h (Single Channel), 15–150 Nl/h (Dual Channel, per channel)
Maximum Combined Flow Capacity200 Nl/h at Rated Backpressure
Operating Ambient Temperature5–45 °C (up to 50 °C continuous)
Dew Point Control+3 °C ± 0.2 °C
RefrigerantR134a (non-CFC, environmentally compliant)
Material of ConstructionPVDF (Polyvinylidene Fluoride) gas pathways
Integrated ComponentsDual diaphragm sampling pumps, condensate removal pump, digital temperature display with alarm, precision thermal mass flow sensors, high-efficiency counterflow heat exchanger
ComplianceDesigned for ASTM D6348, ISO 12913-1, EPA Method 25A, and EU EN 13649-1 pre-conditioning requirements
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BrandLESHI
ModelSE300-Tech
TypePortable Flue Gas Analyzer
Detection PrincipleNDIR (CO, CO₂, HC, SO₂), Electrochemical (O₂, NO, NO₂, NH₃, H₂S), Optional NDUV (NO, NO₂, SO₂)
Gas ChannelsUp to 6 simultaneously measurable gases (standard configuration)
ComplianceDesigned for field-deployable combustion efficiency and emissions verification per ISO 12039, EN 15267, and EPA Method 6C/7E prerequisites
PowerRechargeable Li-ion battery (≥4 hr continuous operation)
Display5.7" TFT LCD with touch interface
Data StorageRemovable MMC card (up to 32 GB)
ConnectivityUSB 2.0, Bluetooth 4.2, optional RS-232
Operating Temperature0–40 °C
Protection RatingIP42
Weight≤2.8 kg
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BrandLeshi
ModelSE350
TypePortable Gas Analyzer
Detection PrinciplesNDIR (CO, CO₂), Electrochemical (O₂), TCD (H₂, optional)
Gas ChannelsUp to 4 simultaneous gases (configurable: CO, CO₂, O₂, CH₄, H₂)
Power SupplyRechargeable Li-ion battery + AC adapter
Sampling SystemIntegrated diaphragm pump, flow meter, particulate filter, and sample line
EnclosureIP65-rated ruggedized stainless-steel housing (chemically resistant grade)
DisplayBacklit LCD with real-time concentration readouts
Output Options4–20 mA analog output, RS232/USB data interface, optional data logger
ComplianceDesigned for industrial field use per IEC 61000-6-2/6-4 (EMC), ATEX Zone 2 / IECEx nA IIC T4 Ga (optional certification variant)
Operating Temperature−10 °C to +50 °C
Storage Temperature−20 °C to +60 °C
Relative Humidity0–95 % RH (non-condensing)
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BrandLeshi
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
Model9100FIR-air
PriceUSD 165,000 (FOB Beijing)
Measurement PrincipleFourier Transform Infrared (FTIR) Spectroscopy
Application DomainEnvironmental Monitoring & Industrial Emissions Compliance
Accuracy±2% of reading
Repeatability±2% of full scale
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BrandLESHI
OriginCanada
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
Model943-TGX
Instrument TypeOnline Gas Analyzer
Measured GasesH₂S, SO₂
Response TimeT₉₀ < 10 s (system), < 1 s (analyzer)
Accuracy±1% FS for H₂S, ±1% FS for SO₂
Measurement RangeH₂S (0–4) vol%, SO₂ (0–2) vol%
Detection PrincipleUV Absorption Spectroscopy
Dimensions57″ W × 41.25″ H × 16″ D
EnclosureTwo 24″ W × 30″ H × 12″ D cabinets
Weight~275 lb (with all options)
Power110/240 VAC, 50/60 Hz, 1100 W
Ambient Temperature0–50 °C
Sample Flow Rate< 5 ft³/h
UV SourceHigh-stability deuterium lamp
Detector2048-pixel CCD array
Display5.7″ LCD (640 × 480), intrinsically safe keypad
OutputFour isolated 4–20 mA channels (1 Hz update), relay outputs
Data Storage1 GB standard (up to 8 GB optional)
Zero Drift< ±0.25% FS/day (auto-zero every 4 h)
Linearity & Repeatability±1% FS
Explosion ProtectionClass I, Div 2, Groups C & D, T3
Instrument Air22 SCFM @ 80 psi (20 SCFM with cooler)
Steam SupplyProbe –50 psi
Total Sulfur Range(H₂S + SO₂) (0–6) vol%
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BrandLeshi
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
Model9100FIRair-G
Technology PrincipleFourier Transform Infrared (FTIR) Spectroscopy
Detection PrincipleMid-Infrared Absorption Spectroscopy
Accuracy≤ ±2% FS
Repeatability≤ 2% RSD
Measured GasesN₂O, CH₄, CO₂, SF₆, NF₃, CFCs (Chlorofluorocarbons), PFCs (Perfluorocarbons)
Simultaneous Quantification CapacityUp to 50 compounds
Spectral Range485–8500 cm⁻¹
Spectral Resolution1 cm⁻¹ (standard), optional higher/lower resolutions available
Sample Cell Volume300 mL
DetectorDTGS (Deuterated Triglycine Sulfate), room-temperature operation, >10-year lifetime
Reference SourceSolid-State VSECL Laser, >10-year lifetime
Quantitative Spectral Library≥400 compounds (freely accessible and user-expandable)
Qualitative Spectral Library5874 compounds
Software FeaturesAuto-ranging mode, user-defined calibration file creation, spectral library import/export, GLP-compliant data logging
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BrandLeshi
OriginBeijing, China
Instrument TypePortable
Detection PrincipleHeated Flame Ionization Detection (HFID) with High-Temperature Catalytic Methane Scrubber
ComplianceHJ/T 38–2017, HJ 1012–2018, DB11/T 1367–2016, GB 18352.6–2016, GB 17691–2018, EN 12619, EN 13526, US EPA Compliant
CertificationCPA Certified, MCERTS Certified
Fuel OptionsH₂/He mixture or pure H₂
Zero Air SourceIntegrated catalytic air purifier (no external zero air required)
Data LoggingBuilt-in recorder with IoT-enabled telemetry
Optional ModulesO₂, temperature, pressure, flow, humidity, PID/benzene speciation
Sample LineIntegrated heated sampling line (up to 180 °C)
Detection LimitSub-ppb range for THC (typical)
Response TimeT₉₀ < 3 s
Range SwitchingMulti-range, auto-switching without power cycle
FilterRemovable PTFE particulate filter
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BrandFoedisch
OriginGermany
ModelUVA17m
TypePortable Multicomponent Gas Analyzer
Measurement PrincipleHigh-Temperature Ultraviolet Absorption Spectroscopy
Response Time≤2 s
Measurable GasesO₂, NOₓ (NO/NO₂), SO₂, NH₃, H₂S
Operating Temperature Range185–200 °C (full-path heated)
Detection LimitsSO₂ down to 0–50 mg/m³
Sample HandlingHot-wet, in-situ sampling without drying, dilution or cooling
ComplianceDesigned for EN 15267-3, EN 14181, ISO 12039, and EPA Method 201A-compliant monitoring
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BrandSIGNAL
OriginUnited Kingdom
Model3010Plus
Instrument TypePortable
ComplianceHJ/T 38–2017, HJ 1012–2018, GB 17691–2018, GB 18352.6–2016, DB11/T 1367–2016, DB37/T 3922
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BrandFoedisch
OriginGermany
ModelMCA14m
Measurement PrincipleNon-Dispersive Infrared (NDIR) with High-Temperature Optical Path
Operating Temperature185 °C (entire gas path heated)
Accuracy≤1% FS
Repeatability±2% FS
Response Time (T90)<10 s
Zero CalibrationAutomatic, using ambient air
Gas ComponentsO₂, CO₂, H₂O, SO₂, NO, NO₂, N₂O, NH₃, HCl, CO, CH₄
Sampling MethodExtractive, hot-wet
Power Supply230 V AC, 50/60 Hz
Enclosure RatingIP65
ComplianceEN 15267-3, EN 14181, MCERTS, ISO 14001-compatible operation
Data OutputRS485, Ethernet, 4–20 mA analog outputs
SoftwarePC-based configuration & data logging (free OEM software with audit trail)
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BrandLESHI
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Product CategoryDomestic
ModelSE304
Instrument TypePortable
Measured GasSO₂
Detection PrincipleNon-Dispersive Infrared (NDIR) at 7.3 µm
ComplianceHJ 692–2011
Measurement RangeCustomizable up to 0–5000 ppm
Response Time< 30 s (T₉₀)
Warm-up Time< 60 s
Built-in ComponentsSampling Pump, Particulate Filter, Mass Flow Meter
Probe MaterialStainless Steel with Flexible Sampling Hose
OptionalCondensate Removal Module (User-configurable)
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BrandSIGNAL
OriginUnited Kingdom
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelSOLAR
Detection PrincipleHeated Flame Ionization Detector (HFID)
Instrument TypeOnline Continuous Analyzer
Typical ConfigurationDual-Channel VOC & NMHC Analyzer
Measurement Ranges0–1 ppm, 0–10 ppm, 0–1,000 ppm, 0–10,000 ppm
Resolution±1% of reading
Accuracy±1% of reading
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BrandProtea
OriginUnited Kingdom
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelAtmosFIR
Detection PrincipleFourier Transform Infrared Spectroscopy (FTIR)
Instrument TypePortable
Typical ConfigurationMulti-Component VOC Analyzer
Measurement Range0–50–100 mg/m³ (gas-dependent)
Spectral Resolution1 cm⁻¹, 2 cm⁻¹, 4 cm⁻¹, 8 cm⁻¹
Accuracy±5% of reading
Response Time120 s
CertificationUK MCERTS, M22 for Stack Emission Monitoring
DetectorDTGS (Deuterated Triglycine Sulfate), ambient-temperature operation
EnclosureIP65-rated ruggedized transport case
Mounting OptionsPortable field unit or 19-inch rack-mountable configuration
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BrandLESHI
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Product OriginDomestic (China)
Model9100FIRair Emergency Edition
Price RangeUSD 125,000 – 182,000
Analyte TypesGaseous, Aqueous, Solid (soil headspace/vapor)
Target AnalytesVOCs, inorganic gases (e.g., CO, CO₂, NO, NO₂, SO₂, NH₃, HCl, HF, CH₄), greenhouse gases
Response Time≤120 s (gas-dependent)
Spectral Resolution Options1 cm⁻¹ or 4 cm⁻¹
DetectorRoom-temperature DTGS
Light SourceVCSEL-based reference laser (10-year lifetime)
Built-in Sample ConditioningParticulate filtration, N₂ purge ports (optical path & gas cell), optional integrated zirconia O₂ sensor
Optional ModuleExternal H₂S electrochemical module
ComplianceHJ 919–2017, HJ 920–2017, HJ 1011–2018
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BrandOntech
OriginGuangdong, China
Manufacturer TypeAuthorized Distributor
Origin CategoryDomestic (China)
ModelOntech800
Price RangeUSD 770 – 1,680
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BrandFoedisch
OriginGermany
ModelMCA10m
Instrument TypePortable Flue Gas Analyzer
Measurement Accuracy (Full Scale)±0.1%
Repeatability≤2%
Response Time (T90)3 s
Long-Term Stability±2% per 8 h
Measured GasesO₂, CO, CO₂, NO, SO₂, NO₂
Detection PrincipleElectrochemical (O₂, CO, NO, SO₂, NO₂) and NDIR (CO₂)
Operating Temperature Range-10 °C to +50 °C
IP RatingIP42
Power SupplyRechargeable Li-ion battery (≥6 h continuous operation)
Data StorageInternal SD card (≥16 GB), up to 1 million data points
ComplianceEN 50379-1/-2, DIN EN 15267-3, MCERTS certified (UK), ISO 12039, ISO 10849, ASTM D6522
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BrandLeshi
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
Model9100-ODS
Price RangeUSD 365,000 – 408,000
Measurement PrincipleFourier Transform Infrared Spectroscopy (FTIR)
Application DomainEnvironmental Compliance & Industrial Emissions Monitoring
Detection PrincipleFTIR Absorption Spectroscopy
Accuracy≤ ±2% of Full Scale
Target Gases30 Primary ODS Compounds (e.g., CFC-11, CFC-12, HCFC-22, HCFC-141b, Halon-1211, Halon-1301, CCl₄, CH₃Br, C₂H₃Cl₃)
Response Time≤ 120 s
Repeatability< 2% of Full Scale
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BrandLeshi
OriginUnited Kingdom
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelAtmosFIR
Instrument PrincipleInfrared Absorption Spectroscopy
Form FactorPortable
Response TimeT90
Repeatability±2% of full scale for CO, CO₂, NO, NO₂, HCN, HCl, HBr, HF, SO₂, Acrolein
Spectral Range400–5000 cm⁻¹
DetectorAmbient-Temperature DTGS
Quantifiable GasesUp to 50 components simultaneously
Spectral Library>5000 reference spectra (400+ freely accessible)
AlgorithmsPLS, CLS, ILS
Gas Expansion CapabilityUser-definable spectral library extension
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BrandLeshi
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Origin CategoryDomestic
Model9100 ODS
Price RangeUSD 365,000 – 408,000
Measurement PrincipleFourier Transform Infrared Spectroscopy (FTIR)
Application DomainEnvironmental Compliance & Industrial Emissions Monitoring
Detection PrincipleFTIR Absorption Spectroscopy
Accuracy≤ ±2% of Full Scale
Target Gases30 Primary ODS Compounds (e.g., CFC-11, CFC-12, HCFC-22, HCFC-141b, Halon-1211, Halon-1301, CCl₄, CH₃Br, etc.)
Response Time≤ 120 s
Repeatability< 2% of Full Scale
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BrandLeshi
OriginBeijing, China
Model9100FIR
Instrument TypePortable
Spectral Range485–8500 cm⁻¹
Resolution Options1, 2, 4, or 8 cm⁻¹
Scan SpeedUp to 1 scan/sec (resolution-dependent)
Signal-to-Noise Ratio>20,000:1 (peak-to-peak, 60-sec acquisition), >120,000:1 (RMS, 60-sec acquisition)
Wavenumber Accuracy±0.01 cm⁻¹
Operating Sample TemperatureUp to 180 °C (hot-wet sampling)
DetectorAmbient-temperature DTGS
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