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| Brand | Junfang Physical & Chemical |
|---|---|
| Origin | Beijing, China |
| Model | JF-2211 |
| Volume Output Range | 1–1000 mL per injection |
| Concentration Dilution Ratio | up to 1:400 |
| Calibration Accuracy | ±1% of set volume |
| Compatible Gas Types | Non-corrosive gases only |
| Optional Mixing Chamber Volume | 10–100 L |
| Control System | Microprocessor-based programmable timing and sequencing |
| Brand | Junfang Analytical |
|---|---|
| Model | JF-2215 |
| Origin | Beijing, China |
| Gas Compatibility | CH₄, CO, C₃H₈, H₂ (expandable to C₄H₁₀, C₂H₅OH) |
| Concentration Accuracy | ±2% FS |
| Repeatability | 1% |
| Stability (5 min) | ≤4% drift under sealed conditions |
| Predefined Concentration Steps | 7 per gas (user-configurable) |
| Gas Type | Non-corrosive gases only |
| Price Range | USD 2,800 – 7,000 |
| Brand | Junfang Lihua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (China) |
| Model | HXPQX-2013 |
| Price Range | USD 42,000 – 70,000 |
| Brand | Junfang Chemical Physics |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | JF-2310 |
| Price Range | USD 2,800 – 7,000 |
| Gas Mixing Ratio Range | 0–100% |
| Minimum Dilution Ratio | 0.1% of Source Gas Concentration |
| Output Flow Rate | 0.5–1.0 L/min |
| Indication Error | ±0.5% FS |
| Linearity | ±0.5% FS |
| Repeatability | ±1.0% FS |
| Power Supply | 220 V AC, 50 Hz |
| Operating Temperature | 0–50 °C |
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