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| Brand | Xuxin Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ST-1551 |
| Detection Type | Total Mercaptan Sulfur |
| Compliance Standard | GB/T 1792 |
| Measurement Range | 3–100 μg/g (ppm) |
| Potentiometric Range | −1999.5 to +1999.5 mV |
| Basic Error | ±0.1% ±0.5 mV |
| Burette Volume | 10 mL |
| Burette Accuracy | ±0.1% FS |
| Operating Temperature | 5–45 °C |
| Relative Humidity | 10–80% RH |
| Power Supply | 220 V ±10%, 50 Hz |
| Software Interface | Windows-based workstation with bilingual (Chinese/English) display option |
| Automation Features | Auto-rinsing, auto-reagent replenishment, fixed-volume dispensing, automatic endpoint detection, false-endpoint filtering, manual endpoint override, real-time titration curve plotting, data storage & thermal printing |
| Brand | Xuxin Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | Xuxin ST-1545 |
| Price Range | USD 7,000 – 14,000 (FOB) |
| Analyte Types | Total Sulfur (S) and Total Nitrogen (N) |
| Detection Principles | UV Fluorescence (S), Chemiluminescence (N) |
| Compliant Standards | SH/T 0657, SH/T 0689, ASTM D4629, ASTM D5453 |
| Sample Forms | Liquids, Solids, Gases (with optional injectors) |
| S Detection Range | 0.2–10,000 mg/L (ppm to wt%) |
| N Detection Range | 0.1–10,000 mg/L (ppm to wt%) |
| S LOD | 0.2 mg/L |
| N LOD | 0.1 mg/L |
| Furnace Temp Range | Ambient to 1300 °C |
| Temp Control Accuracy | ±1 °C |
| Gas Requirements | High-purity Ar (≥99.99%), O₂ (≥99.99%) |
| Flow Control Options | Electronic Mass Flow Controllers or Rotameters |
| Data Acquisition | 24-bit USB interface, signal resolution <1 µV |
| Power | 220 V ±10%, 50 Hz, ≤2500 W |
| Operating Environment | 5–45 °C, 10–80% RH |
| Precision (RSD) | 2–5% across 0.2–5000 ppm range depending on injection volume (5–20 µL liquid) |
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