Open-Loop Flow-Through Dissolution System (USP Apparatus 4)开环流通池溶出系统(USP 装置 4)
- Apparatus type
- USP Apparatus 4, open loop
- Number of cells
- 6–8
流通池溶出系统

Photo for reference; configuration may vary by order.
Model No. FTS-0002 · Dissolution Testing Equipment
闭环流通池溶出系统
Low-dose products can fall below detection limits in open-loop flow, so recirculating a fixed volume lets the concentration build. This closed-loop Apparatus 4 setup uses a 100–1000 mL reservoir per channel, cutting medium use and waste. Pick manual sampling or a UV flow cell, and 12 mm or 22.6 mm cells.
| Place of origin | China (dispatched from Shanghai) |
|---|---|
| Brand | Liquid International / OEM on request |
| Export packing | Fumigation-free plywood case or reinforced carton |
| Loading port | Shanghai / Ningbo (others on request) |
| Payment terms | T/T, L/C at sight (confirmed on quotation) |
| Trade terms | EXW, FOB, CFR, CIF, DAP |
Typical export terms — final terms are confirmed on the proforma invoice.
Low-dose products can fall below detection limits in open-loop flow, so recirculating a fixed volume lets the concentration build. This closed-loop Apparatus 4 setup uses a 100–1000 mL reservoir per channel, cutting medium use and waste. Pick manual sampling or a UV flow cell, and 12 mm or 22.6 mm cells.
| Parameter | Value |
|---|---|
| Apparatus type 装置类型 | USP Apparatus 4, closed loop |
| Number of cells 流通池数量 | 6–8 |
| Reservoir volume 储液器体积 | 100–1000 mL |
| Flow rate 流速 | 8–16 mL/min |
| Pulse rate 脉冲频率 | 120 ± 10 pulses/min |
| Temperature control 温度控制 | 37.0 ± 0.5 °C |
| Cell diameter 流通池直径 | 12 mm and 22.6 mm |
| Detection 检测方式 | manual sampling or UV flow cell |
| Mixing 混合 | reservoir stirrer, optional |
| Power supply 电源 | 220 V AC, 50/60 Hz, about 0.8 kW |
| Model No. | FTS-0002 |
| Place of origin | China (dispatched from Shanghai) |
Chinese national standards (GB/T, JJG) and international standards referenced for this product type. Test reports and certificates are supplied with the quotation on request.
Fumigation-free plywood case or reinforced carton
Every unit is power-tested before packing; enclosed in shock foam and moisture barrier; wooden cases comply with ISPM 15.
Shanghai / Ningbo (others on request)
Full container load (FCL), less-than-container load (LCL) or air freight; complete export documentation provided.
Complete the form below — an export engineer will send technical configurations and a formal proforma invoice within 24 hours.
Single instruments, complete laboratories or government tenders — our export engineers prepare the configuration, proforma invoice and shipping documents.