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| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | 723N |
| Price | USD 920 (FOB Shanghai) |
| Wavelength Range | 325–1000 nm |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | ≤0.5 nm |
| Spectral Bandwidth | 4 nm |
| Stray Light | ≤0.3% τ (at 360 nm, NaNO₂ reference |
| typical measured | 0.1% τ) |
| Transmittance Range | 0.0–200.0% τ |
| Transmittance Accuracy | ±0.5% τ (certified NIST-traceable NBS 930D filter) |
| Transmittance Repeatability | ≤0.2% τ |
| Absorbance Range | –0.301 to 4.000 A |
| Baseline Flatness | ±0.005 A |
| Drift | ≤0.004 A/h |
| Sampling Interval Options | 0.1, 0.2, 0.5, 1, 2, or 4 nm |
| Display | 5″ LCD graphical interface |
| Output | Integrated thermal printer (optional external USB/RS-232 connectivity) |
| Brand | HAMILTON |
|---|---|
| Origin | USA |
| Model | 500 µL |
| Needle Type | Fixed-Needle, Standard |
| Volume Accuracy | ±1% (per ASTM D3747) |
| Needle Gauge | 22s |
| Hub Type | Luer Lock |
| Sterility | Non-sterile, Individually Packed |
| Compliance | ISO 8536-4, USP <381>, FDA 21 CFR Part 11 Ready (when used with compliant autosampler software) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Instrument Type | Benchtop |
| Parameter Type | Single-parameter (pH/mV) |
| pH Measurement Range | 0.00–14.00 pH |
| mV Range | ±1800 mV |
| Resolution | 0.01 pH / 1 mV |
| Accuracy | ±0.01 pH ±1 digit / ±1 mV ±1 digit |
| Input Impedance | ≥1 × 10¹² Ω |
| Temperature Compensation Range | 0–60 °C |
| Sample Temperature Range | 5–60 °C |
| Stability | ±0.01 pH ±1 digit / 3 h |
| Display | 3½-digit LED |
| Calibration Modes | One-point or two-point |
| Electrode Compatibility | E-201-C combination pH electrode |
| Compliance | Meets GB/T 11165–2022 (Chinese national standard for laboratory pH meters), aligned with ISO 7888 and ASTM D1293 principles |
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | DDS-307A |
| Price | USD 230 (FOB Shanghai) |
| Accuracy Class | 1.0 |
| Conductivity Range | 0–1.999 μS/cm, 2.0–19.99 μS/cm, 20.0–199.9 μS/cm, 200–1999 μS/cm, 2.0–19.99 mS/cm, 20.0–199.9 mS/cm |
| Temperature Range | –5 to 105 °C |
| Conductivity Accuracy | ±1.0% FS |
| Temperature Accuracy | ±0.5 °C |
| Temp. Compensation | 0–100 °C, Coefficient 2.0%/°C |
| Electrode Constants Supported | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Display | Backlit LCD, Multi-parameter |
| Auto Functions | Auto-ranging, Auto-calibration, Auto-temperature compensation |
| Measurement Modes | Conductivity, Resistivity, TDS, Temperature |
| Brand | Leici |
|---|---|
| Model | PHS-3E |
| Instrument Class | 0.01 |
| pH Range | (-2.00 to 18.00) pH |
| mV Range | ±1999 mV |
| Temperature Range | (0.0 to 99.9) °C |
| pH Resolution | 0.01 pH |
| mV Resolution | 1 mV |
| Temperature Resolution | 0.1 °C |
| pH Accuracy | ±0.01 pH ±1 digit |
| mV Accuracy | ±1 mV ±1 digit |
| Temperature Accuracy | ±0.3 °C ±1 digit |
| Input Impedance | 1 × 10¹² Ω |
| Stability | ±0.01 pH ±1 digit / 3 h |
| Temp. Compensation Range | (0.0 to 99.9) °C |
| Sample Temp. Limit | (0 to 60) °C |
| Electrode Compatibility | E-201-C pH combination electrode, T-818-B-6 temperature sensor |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHS-3C |
| Instrument Type | Benchtop |
| Parameter Types | pH and mV |
| Measurement Accuracy | ±0.1 pH |
| pH Range | 0.00–14.00 pH |
| pH Resolution | 0.01 pH |
| mV Range | −1999–+1999 mV |
| mV Resolution | 1 mV |
| Input Impedance | ≥1 × 10¹² Ω |
| Stability | ≤0.01 pH per 3 h |
| Temperature Compensation Range | 0–60 °C |
| Sample Temperature Range | 5–60 °C |
| Calibration Options | One-point or two-point (using NIST-traceable buffer solutions) |
| Electrode Compatibility | E-201-C pH combination electrode |
| Display | 3½-digit LED |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDSJ-308A |
| Detection Parameters | Single-parameter (Conductivity/TDS/Salinity/Temperature) |
| Form Factor | Benchtop |
| Conductivity Range | 0.000 µS/cm to 199.9 mS/cm |
| TDS Range | 0.000 mg/L to 99.9 g/L |
| Salinity Range | (0.00–8.00)% |
| Temperature Range | (−5.0 to 105.0) °C |
| Accuracy | ±0.5% FS (Conductivity & TDS), ±0.1% FS (Salinity), ±0.3 °C ±1 digit (Temperature) |
| Minimum Resolution | 0.01 µS/cm |
| Electrode Constant Options | 0.01, 0.1, 1, 10 cm⁻¹ |
| Data Storage Capacity | 200 measurement sets |
| Interface | RS-232 serial port |
| Compliance | Meets JJG 376–2007 (Chinese National Verification Regulation for Conductivity Meters), suitable for GLP-compliant environments with audit-ready data handling |
| Brand | Beifen Ruili |
|---|---|
| Origin | Beijing, China |
| Model | 722N |
| Optical System | Single-beam Czerny-Turner with 1200 L/mm grating |
| Wavelength Range | 350–1020 nm |
| Spectral Bandwidth | 6 nm |
| Wavelength Accuracy | ±2 nm |
| Stray Light | ≤0.3% T at 400 nm |
| Photodetector | Silicon photodiode array |
| Measurement Modes | Transmittance (T), Absorbance (A), Concentration (C) |
| Display | 128×64 dot-matrix LCD |
| Zero Adjustment | Automatic |
| Weight | 8 kg |
| Dimensions (L×W×H) | 520×450×320 mm |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDS-11A |
| Form Factor | Benchtop |
| Conductivity Range | 0–1.999 S, 2.0–19.99 S, 20.0–199.9 S, 200–1999 S, 2.0–19.99 mS, 20.0–199.9 mS |
| Temperature Range | −5 to 105 °C |
| Accuracy | ±0.5% FS (conductivity), ±0.5 °C (temperature) |
| Resolution | 0.01 (conductivity units), 0.1 °C (temperature) |
| Temperature Compensation | Automatic, 0–100 °C, 2.0% / °C coefficient |
| Electrode Constant Compatibility | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Measurement Modes | Conductivity, TDS (calculated), Resistivity (calculated), Temperature |
| Calibration | Auto-calibration with standard solutions |
| Display | Large LCD, multi-parameter simultaneous readout |
| Instrument Class | 1.0 grade per GB/T 11018–2021 (equivalent to IEC 60746-3) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDS-307A |
| Conductivity Range | 0–1×10⁵ μS/cm |
| Cell Constants | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Accuracy | ±1.0% FS ±1 digit |
| Temperature Compensation | 15–35°C (ref. 25°C) |
| Sample Temp. Range | 5–60°C |
| Display | Dual-line LCD with blue backlight |
| Compliance | Class 1.0 according to JJG 376–2007 (Chinese national metrological verification regulation) |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | UV-9600 |
| Price | USD 1,780 (FOB Beijing) |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 5.0 nm (1/2/4 nm selectable) |
| Wavelength Accuracy | ±2.0 nm |
| Wavelength Repeatability | ≤1.0 nm |
| Photometric Accuracy (Transmittance) | ±0.5% τ |
| Photometric Repeatability (Transmittance) | ≤0.2% τ |
| Stray Light | ≤0.05% τ (at 220 nm with NaI |
| Baseline Stability | ≤0.001 A/30 min (at 500 nm, post 30-min warm-up) |
| Photometric Modes | Transmittance (%T), Absorbance (A), Concentration (C), Energy |
| Photometric Range | –0.3 to 3.0 A |
| Display | 16×2 character LCD |
| Detector | Imported silicon photodiode |
| Light Sources | Imported deuterium lamp (optional), imported tungsten-halogen lamp |
| Power Supply | AC 220 V / 50 Hz or 110 V / 60 Hz |
| Power Consumption | 120 W |
| Dimensions (W×D×H) | 530 × 410 × 210 mm |
| Net Weight | 16 kg |
| Brand | HAMILTON |
|---|---|
| Origin | USA |
| Type | Gas-Tight Fixed-Needle Syringe |
| Volume | 250 µL |
| Application | Gas Chromatography (GC) Sample Introduction |
| Compliance | ASTM D4057, USP <621>, ISO/IEC 17025-aligned handling protocols |
| Needle | Stainless Steel, 23G × 2″ (0.64 mm × 50.8 mm), fixed |
| Barrel Material | Borosilicate glass with PTFE plunger seal |
| Accuracy | ±1% full scale (per ISO 8536-4) |
| Repeatability | CV < 0.5% (n = 10, standardized GC injection protocol) |
| Brand | Beifen Ruili |
|---|---|
| Origin | Beijing, China |
| Model | UV757 |
| Optical System | Single-beam |
| Detector | Photodiode Array |
| Wavelength Range | 190 nm – 1100 nm |
| Wavelength Accuracy | ±0.8 nm |
| Spectral Bandwidth | 3 nm |
| Stray Light | ≤0.15% T (at 220 nm and 360 nm) |
| Absorbance Range | −0.301 A to 4.000 A |
| Transmittance Range | 0.0% T to 200.0% T |
| Concentration Readout Range | 0–9999 (arbitrary units) |
| Absorbance Repeatability | ±0.002 A |
| Transmittance Accuracy | ±0.5% T (verified with NIST-traceable NBS 930D filter) |
| Baseline Linearity | ±0.004 A |
| Drift | ≤0.004 A/30 min |
| Noise | 0.5% T (at 100% T), 0.2% T (at 0% T) |
| Power Supply | AC 220 V, 50 Hz |
| Dimensions | 520 mm × 410 mm × 200 mm |
| Net Weight | 18 kg |
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