Empowering Scientific Discovery

Yuanheng International Co., Ltd.

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BrandYoke
OriginShanghai, China
ModelT3202S
Optical DesignDual-beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Spectral Bandwidth1 nm (standard), adjustable to 0.5/1/2/4/5 nm
Stray Light≤0.03% at 220 nm (NaI)
Display10.1-inch capacitive touchscreen
Data StorageInternal 8 GB + USB drive support
InterfaceRS-232C, USB Device, USB Host
Onboard MemoryUp to 5000 absorbance measurements or 500 calibration curves
Optional Accessories8-position rotating cuvette changer, integrated flow cell system
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BrandUniCo
OriginShanghai, China
Instrument TypeSingle-Beam
DetectorPhotodiode Array (PDA)
Wavelength Range190–1100 nm
Spectral Bandwidth1.8 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.2 nm
Stray Light≤0.05% T
Display7-inch high-resolution color touchscreen
Data InterfaceUSB storage, Bluetooth printing & mobile app integration
Scan SpeedUp to 3000 nm/min (high mode)
Scan Interval Options0.1, 0.2, 0.5, 1, 2, 5 nm
Kinetic Sampling Interval0.5 s minimum
Kinetic DurationUp to 9 hours
Calibration ModesZero-order, first-order (with/without intercept), second-order, third-order polynomial regression
Standard Curve MethodsSingle-wavelength, dual-wavelength (isosbestic point), three-point calibration
File Capacity100 measurement records per test type
ComplianceDesigned for routine QC and R&D use in GLP-aligned laboratories
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BrandUniCo
OriginShanghai, China
ModelUV-4802
Optical SystemDual-Beam
Detector TypePhotodiode Array (PDA)
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability±0.1 nm
Spectral Bandwidth1.8 nm
Stray Light≤0.05% T
Photometric Accuracy±0.004 Abs (0–0.5 Abs), ±0.004 Abs (0.5–1.0 Abs), ±0.5% T
Photometric Repeatability±0.001 Abs (0–0.5 Abs), ±0.002 Abs (0.5–1.0 Abs), ±0.2% T
Baseline Drift±0.002 A/h (at 500 nm, after warm-up)
Display320 × 240 graphic LCD
Data InterfaceUSB port
Dimensions (W × D × H)625 × 405 × 280 mm
Weight23 kg
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BrandYoke
OriginShanghai, China
ModelL6
Optical DesignDual-Beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Spectral Bandwidth1 nm
Stray Light≤0.03% at 220 nm (NaI)
Automation LevelAutomatic Wavelength Scanning & Lamp Switching
ConnectivityUSB 2.0, Wi-Fi Module, Bluetooth 4.2
Data Storage Capacity500 spectra, 30 calibration curves
Software CompatibilityYokelab PC Suite (optional), Excel-compatible CSV export
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BrandUniCo
OriginShanghai, China
ModelUV-3802
Optical SystemPseudo-Double-Beam
Detector TypePhotocell
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability±0.1 nm
Spectral Bandwidth1.8 nm
Stray Light≤0.05% T
Photometric Accuracy±0.004 Abs (0–0.5 Abs), ±0.004 Abs (0.5–1.0 Abs), ±0.5% T
Photometric Repeatability±0.001 Abs (0–0.5 Abs), ±0.002 Abs (0.5–1.0 Abs), ±0.2% T
Baseline Stability±0.002 A/h (at 500 nm, after warm-up)
Display320 × 240 graphical LCD
Data InterfaceUSB port
Dimensions (W×D×H)625 × 405 × 280 mm
Weight22 kg
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BrandBM
OriginShanghai, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
Model9W
Instrument ArchitectureSingle-Beam
Detector TypePhotomultiplier Tube (PMT)
Wavelength Range200–1000 nm
Wavelength AdjustmentManual
Spectral Bandwidth2 nm
Wavelength Accuracy±0.5 nm
Wavelength Repeatability±0.2 nm
Stray Light≤0.5%
Objective Magnifications20× (NA 0.26), 23× (NA 0.30), 26× (NA 0.34), 29× (NA 0.38)
Projection Magnification21×
Illumination Source12 V / 50 W Tungsten-Halogen Lamp
Slit Width Adjustment0–3 mm (graduated to 0.01 mm)
Height Adjustment0–20 mm (graduated to 2 mm)
Stage TravelLongitudinal 0–90 mm (1 mm scale), Transverse 0–220 mm (coarse) + 0–25 mm (fine, 0.01 mm resolution)
Selenium Photocell Active AreaØ25 mm
Sensitivity400–500 µA/lm
Lifetime≥500 h
Galvanometer Sensitivity2.5 × 10⁻⁹ A/mm/m
Oscillation Period1 s
Net Weight50 kg
Dimensions (L × W × H)1500 × 900 × 800 mm
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BrandYoke
OriginShanghai, China
ModelT-U6S
Optical SystemDual-beam with CT monochromator
DetectorHamamatsu photomultiplier tube (PMT)
Wavelength Range190–1100 nm
Spectral Bandwidth1 nm (fixed)
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Stray Light≤0.03% at 220 nm (NaI)
Display7-inch TFT-LCD (1024×768) with Omron tactile keypad
Internal Storage32 GB flash memory
Data CapacityUp to 5,000 absorbance measurements or 500 calibration curves
Processor32-bit ARM Cortex-M3 @ 120 MHz
InterfaceRS-232C (printer), USB Device (PC connection), USB Host (U-disk support)
File Export FormatsCSV, QUA, TXT, BMP
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BrandYoke
OriginShanghai, China
Manufacturer TypeAuthorized Distributor
Origin CategoryDomestic (China)
Modeli5
QuotationUpon Request
Optical DesignSingle-Beam
DetectorPhotodiode Array (PDA)
Wavelength Range360–900 nm (Visible Region)
Wavelength ScanningAutomatic
Spectral Bandwidth4 nm
Wavelength Accuracy±2 nm
Wavelength Repeatability≤1 nm
Stray Light≤0.5%T at 420 nm (NaNO₂ reference)
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BrandUNICO
OriginShanghai, China
ModelV-1850
Optical SystemSingle-beam
DetectorPhotodiode Array
Wavelength Range315–1100 nm
Spectral Bandwidth2 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.2 nm
Stray Light≤0.05% T (at 220 nm & 340 nm)
Display Resolution0.1 nm
InterfaceUSB, Bluetooth, Touchscreen (7″ TFT, 800×480)
Power Input80–250 V AC, 50/60 Hz
Dimensions485 × 365 × 200 mm
Weight11 kg
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BrandYoke
OriginShanghai, China
ModelT-N6000Plus
Optical SystemDual-beam
DetectorPhotodiode Array (PDA)
Wavelength Range190–1100 nm
Spectral Bandwidth1 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Stray Light≤0.03% (at 220 nm, using NaI solution)
Display7-inch color TFT LCD
Data Storage8 GB internal flash memory (supports up to 5000 absorbance readings or 500 calibration curves)
Processor32-bit ARM Cortex-M3 @ 120 MHz
Lamp Life≥2000 hours (automatically switched D₂ and W lamp with usage tracking)
Grating1200 lines/mm holographic plane grating
Sample CompartmentLarge-volume chamber compatible with optional 8-position rotating carousel or 5-position ultra-wide sample holder
ConnectivityRS-232 printer port, USB Host (Type-B), USB Device (Type-A), firmware upgrade via network
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BrandUniCo
OriginShanghai, China
ModelUV-2800A
Optical SystemSingle-beam with 1200 lines/mm holographic grating
Wavelength Range190–1000 nm
Spectral Bandwidth1.8 nm
Wavelength Accuracy±0.5 nm
Wavelength Repeatability≤1 nm
Stray Light≤0.05% T
Detector TypePhotocell
Wavelength Scanning ModeMotorized automatic wavelength drive
Display320 × 240 graphic LCD
Data InterfaceUSB port for direct data export to USB flash drive
Dimensions (W × D × H)545 × 245 × 260 mm
Weight20 kg
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BrandYoke
OriginShanghai, China
ModelT-N6000
Optical DesignSingle-beam
DetectorPhotodiode Array (PDA)
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Spectral Bandwidth1 nm
Stray Light≤0.03% (at 220 nm, using NaI solution)
Display7-inch color TFT touchscreen
Data StorageInternal 8 GB flash memory (supports ≥5000 absorbance readings or ≥500 calibration curves)
Processor32-bit ARM Cortex-M3 @ 120 MHz
Lamp Life≥2000 hours (dual-lamp auto-switching with usage logging)
Grating1200 lines/mm plane holographic grating
InterfaceRS-232, USB Host (Type-B), USB Device (Type-A), optional thermal printer port
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BrandYoke
OriginShanghai, China
ModelUV754PC
Optical SystemCzerny-Turner monochromator with 1200 lines/mm grating
Beam TypeSingle-beam
DetectorPhotodiode array
Wavelength Range190–1100 nm
Spectral Bandwidth2 nm
Wavelength Accuracy±2 nm
Wavelength Repeatability≤1 nm
Stray Light≤0.5% T (at 220 nm, using NaI)
Photometric Accuracy±0.3% T
Photometric Repeatability0.3% T
Baseline Stability±0.004 A/h (at 500 nm, after 1 h warm-up)
Absorbance Range0–1.999 A
Transmittance Range0–199.0% T
Concentration Range0–1999 C
Display4-digit LCD
InterfaceRS-232C serial port
Light Sources6 V/10 W halogen lamp (Philips) and long-life deuterium lamp
Power Supply220/110 V AC, 50–60 Hz
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BrandDELEITE
OriginBeijing, China
Instrument TypeSingle-beam Visible Spectrophotometer
Model Series721 / 722 / 722N / 722S
Wavelength Range320–1100 nm
Spectral Bandwidth2 nm (722S), 4–6 nm (721/722/722N)
Wavelength Accuracy±2 nm (721/722/722N), ±1 nm (722S/723 series)
Wavelength Repeatability≤0.2–1 nm
Stray Light≤0.05%T @ 360 nm
Photometric Accuracy±0.3–0.5%T
Photometric Repeatability±0.2%T
Baseline Linearity≤0.2%T
Drift≤0.001–0.004 A/h @ 500 nm
Noise≤0.1–0.3%T
Optical SystemCzerny-Turner monochromator with 1200 lines/mm grating
DetectorImported silicon photodiode
Light SourceImported tungsten halogen lamp
Display128×64 dot-matrix LCD
Data OutputRS-232 (optional), parallel port (optional), USB (via YOKE 3.0 software interface)
Sample CompartmentAccommodates cuvettes from 5 mm to 100 mm pathlength
ComplianceDesigned for routine QC/QA in accordance with ISO 6425, ASTM E275, and USP <857> spectrophotometric validation principles
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BrandUniCo
OriginShanghai, China
Instrument TypeSingle-Beam
DetectorSilicon Photocell
Wavelength Range190–1100 nm
Wavelength Accuracy±0.8 nm
Wavelength Repeatability±0.2 nm
Spectral Bandwidth2 nm
Stray Light≤0.05% T
Display7-inch capacitive touchscreen (0.1 nm wavelength resolution)
Dimensions485 × 365 × 220 mm
Weight14 kg
Data StorageInternal memory for up to 100 measurement files per method and 200 user-defined methods
ConnectivityUSB port, Bluetooth printing support, mobile app integration (iOS/Android), cloud-ready data export via email/QQ/WeChat
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BrandUniCo
OriginShanghai, China
ModelUV-2150
Optical SystemSingle-beam with 1200 lines/mm diffraction grating
Wavelength Range190–1100 nm
Spectral Bandwidth2 nm
Wavelength Accuracy±2 nm
Wavelength Repeatability±1 nm
Stray Light≤0.2% T at 360 nm
Photometric Accuracy±0.002 Abs (0–0.5 Abs), ±0.005 Abs (0.5–1.0 Abs), ±0.3% T
Photometric Repeatability±0.001 Abs (0–0.5 Abs), ±0.002 Abs (0.5–1.0 Abs), ±0.2% T
Photometric Range0–200% T, –0.3 to 3.0 A, 0–9999 C (or F)
Baseline Stability±0.002 A/h at 500 nm (after warm-up)
Display126 × 64 dot-matrix graphical LCD
Wavelength Resolution1 nm
Detector TypeSilicon photodiode
InterfaceUSB and Centronics parallel port
Dimensions (W×D×H)485 × 365 × 220 mm
Weight14 kg
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BrandYoke
OriginShanghai, China
ModelUV754N
Optical SystemSingle-beam
Detector TypePhotodiode Array
Wavelength Range190–1100 nm
Wavelength Accuracy±2 nm
Wavelength Repeatability0.5 nm
Spectral Bandwidth4 nm
Stray Light≤0.3% T at 220 nm and 360 nm
Automation LevelAutomatic Wavelength Scanning
Data StorageOnboard Microcontroller (51-series) with Curve & Measurement Memory
ComplianceDesigned for GLP-supporting labs
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BrandYoke
OriginShanghai, China
ModelUV752
Optical SystemSingle-beam
DetectorPhotodiode Array
Wavelength Range200–1000 nm
Wavelength Accuracy±2 nm
Wavelength Repeatability≤1 nm
Spectral Bandwidth2 nm
Stray Light≤0.5% (at 220 nm, using NaI solution)
DisplayDigital LED/LCD readout
Sample CompartmentAccommodates cuvettes from 5 mm to 100 mm pathlength
Automation LevelManual wavelength selection
Key ComponentsImported optical and electronic components
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BrandShanghai Youke
OriginShanghai, China
ModelT-N6000SPlus
Optical SystemDual-beam
Detector TypePhotodiode Array (PDA)
Wavelength Range190–1100 nm
Spectral Bandwidth0.5 / 1 / 2 / 4 / 5 nm (selectable)
Wavelength Accuracy±0.3 nm
Wavelength Repeatability±0.1 nm
Stray Light≤0.02% T at 220 nm & 360 nm
Display7-inch color TFT-LCD touchscreen
Data StorageInternal 8 GB flash memory (supports ≥5000 absorbance readings or 500 calibration curves)
Processor32-bit ARM Cortex-M3 @ 120 MHz
Lamp Life≥2000 h (tungsten & deuterium lamps, auto-switched)
Grating1200 lines/mm holographic plane grating
Sample CompartmentExtra-large, compatible with 5-cell wide rack and 8-position rotating carousel
ConnectivityRS-232 printer port, USB Host (Type-B), USB Device (Type-A), optional Ethernet/WiFi module
Data Export Formats.CSV, .QUA, .TXT, .BMP
SoftwarePC-based spectral acquisition & analysis suite with GLP-compliant audit trail, method validation tools, and FDA 21 CFR Part 11-ready optional modules
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BrandYoke
OriginShanghai, China
ModelT-U9
Optical DesignDual-beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–1100 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Spectral Bandwidth1 nm
Stray Light≤0.03% at 220 nm (using NaI solution)
Automation LevelAutomatic Wavelength Scanning
Light SourcePulsed Xenon Lamp
Display10.1-inch Color Touchscreen
Internal Storage32 GB
Data Storage CapacityUp to 5,000 absorbance readings or 500 calibration curves
Processor32-bit ARM Cortex-M3 @ 120 MHz
Interface PortsRS-232C (for printer), USB Device (for PC connection), USB Host (for U-disk), Support for CSV, QUA, TXT, BMP export formats
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BrandUniCo
OriginShanghai, China
ModelUV-2350
Optical SystemSingle-beam with 1200 lines/mm holographic grating
Wavelength Range200–1000 nm
Spectral Bandwidth2 nm
Wavelength Accuracy±0.8 nm
Wavelength Repeatability±0.2 nm
Stray Light≤0.2% T at 220 nm and 340 nm
Photometric Accuracy±0.002 Abs (0–0.5 Abs), ±0.005 Abs (0.5–1.0 Abs), ±0.3% T
Photometric Repeatability±0.001 Abs (0–0.5 Abs), ±0.002 Abs (0.5–1.0 Abs), ±0.2% T
Baseline Linearity±0.002 A
Stability±0.002 A/h at 500 nm (after warm-up)
Display126 × 64 dot-matrix LCD
InterfaceUSB and Centronics
Dimensions (W × D × H)485 × 365 × 220 mm
Weight14 kg
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BrandYoke
OriginShanghai, China
ModelL-3700
Optical SystemDouble-beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–1100 nm
Spectral Bandwidth1 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Stray Light≤0.03% (at 220 nm, using NaI solution)
Display8-inch capacitive touchscreen (1024 × 800 resolution)
Internal Storage5000 absorbance measurements or 500 calibration curves
Data Export Formats*.csv, *.qua, *.txt, *.bmp
ComplianceGLP/GMP-aligned software architecture with user management, audit trail, and electronic signature support
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BrandYoke
OriginShanghai, China
Manufacturer TypeAuthorized Distributor
Product OriginDomestic (China)
ModelL-3700S
Instrument ArchitectureDouble-beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–1100 nm
Automation LevelAutomatic Wavelength Scanning
Spectral Bandwidth1 nm (standard), adjustable to 0.5/2.0/4.0/5.0 nm
Wavelength Accuracy±0.3 nm
Wavelength Repeatability≤0.1 nm
Stray Light≤0.03% at 220 nm (using NaI solution)
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BrandDLAB (Beijing)
OriginBeijing, China
ModelSP-UV3102
Optical SystemDual-beam
Wavelength Range190–1100 nm
Spectral Bandwidth2.0 nm
Wavelength Accuracy±0.1 nm at 656.1 nm, ±0.3 nm across full range
Wavelength Repeatability≤0.1 nm
Stray Light≤0.03% T at 220 nm and 360 nm
Photometric Accuracy±0.002 A (0–0.5 A), ±0.003 A (0.5–1 A)
Photometric Repeatability±0.001 A (0–0.5 A), ±0.0015 A (0.5–1 A)
Baseline Stability≤0.001 A/h at 500 nm (after 1 h warm-up)
Display10.1-inch color capacitive touchscreen (1024 × 600)
InterfaceUSB port
Power Supply110/220 V, 50/60 Hz, 120 W
Dimensions (L×W×H)570 × 440 × 210 mm
Weight20 kg
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