YDWO
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| Brand | YDWO |
|---|---|
| Origin | Shanghai, China |
| Model | WBL Series |
| Measurement Principle | Static Volumetric Nitrogen Physisorption at 77 K |
| Adsorption Gas | N₂ (default), He |
| P/P₀ Range | 1×10⁻⁶–0.998 |
| Surface Area Range | ≥0.0005 m²/g |
| Pore Size Analysis Range | 3.5–5000 Å |
| Pressure Sensor | Imported absolute pressure transducer, 0–133 kPa, ±0.12% FS |
| Temperature Sensors | PT-100, ±0.1 °C |
| Vacuum System | Imported dual-stage rotary vane pump, ultimate vacuum ≤1.0×10⁻⁴ Torr |
| Dewar Capacity | 2 L metal cryostat, >80 h hold time |
| Sample Stations | 1–3 independent analysis ports (model-dependent) |
| Data Output | BET, Langmuir, BJH, t-plot, D-A, H-K, NLDFT/GCMC pore size distributions, isotherms, total pore volume/surface area |
| Brand | YDWO |
|---|---|
| Origin | Shanghai, China |
| Model | WGZ-4000 / WGZ-2000 / WGZ-1000 / WGZ-500 / WGZ-200 / WGZ-100 |
| Measurement Range | 0.000–50.00 NTU |
| Resolution | 0.1 NTU |
| Accuracy | ≤ ±6% |
| Light Source | Tungsten-halogen lamp, 400–600 nm |
| Display Units | NTU, FTU, EBC, ASBC |
| Sample Cell | Ø25 mm × 95 mm, 30–40 mL capacity |
| Data Storage | 1000 measurement records |
| Interface | USB port & USB flash drive support |
| Compliance | ISO 7027, HJ 1075–2019, GLP-ready |
| Power Supply | 220 V ± 22 V, 50 Hz ± 1 Hz, 30 W |
| Dimensions | 358 × 323 × 160 mm |
| Net Weight | 6 kg |
| Brand | YDWO |
|---|---|
| Origin | Shanghai, China |
| Model | WSB-3 |
| Measurement Modes | R457 Blue-Light Whiteness, Fluorescent Whiteness, Opacity |
| Illumination Geometry | d/0 and 45/0 compliant |
| Spectral Peak | 457 nm ±2 nm, FWHM: 45 nm ±5 nm |
| Detector | Silicon Photodiode |
| Aperture | 20 mm |
| Range | 0–150 WHITENESS UNITS |
| Resolution | 0.01 unit |
| Accuracy | ±1.0 units |
| Repeatability | ≤0.2 units |
| Stability (8-hr drift) | ≤0.1 units |
| Display | 7-inch color capacitive touchscreen |
| Data Storage | 200 test records |
| Interface | USB host for U-disk export |
| Power | 100–240 VAC, 50/60 Hz, 40 W |
| Dimensions (W×D×H) | 360 × 228 × 312 mm |
| Net Weight | 4.8 kg |
| Brand | YDWO |
|---|---|
| Origin | Shanghai, China |
| Model | WYA-2S |
| Product Type | Benchtop Refractometer |
| Display | Digital LCD |
| Measurement Range (nD) | 1.3000–1.7000 |
| Resolution (nD) | 0.0001 |
| Accuracy (nD) | ±0.0002 |
| Temperature Display Range | 0–50 °C |
| Power Supply | 220 V ± 22 V, 50 Hz ± 1 Hz, 30 W |
| Dimensions | 290 × 180 × 390 mm |
| Net Weight | 10 kg |
| Compliance | GB/T 12143–2008, GB/T 18963–2012, GB/T 21730–2008 |
| Brand | YDWO |
|---|---|
| Origin | Shanghai, China |
| Model | WYA-2W |
| Product Type | Benchtop Abbe Refractometer |
| Measurement Range (nD) | 1.3000–1.7000 |
| Brix Range | 0–95% |
| Accuracy (nD) | ±0.0003 (estimated reading) |
| Mean Dispersion Display Accuracy | ±0.0005 |
| Temperature Readout | Digital thermometer (external or integrated display) |
| Viewing Method | Binocular observation |
| Dimensions | 160 mm × 140 mm × 100 mm |
| Net Weight | 3 kg |
| Prism Material | Hard optical glass |
| Base Material | Stainless steel |
| Flow Cell | Integrated circulation chamber (compatible with external thermostatic bath) |
| Compliance | Designed to meet general laboratory requirements for refractive index measurement per ISO 2859 and ASTM D1218 |