COD 分析仪
Photo for reference; configuration may vary by order.
Model No. COD-0003 · Water Testing Equipment
滴定式 COD 分析仪
Where colour or turbidity makes photometric COD unreliable, labs fall back on dichromate reflux and titration with ferrous ammonium sulfate. This setup supports ferroin or potentiometric endpoints and a 25 or 50 mL burette, with an automatic burette as an option. It is also the right tool for cross-checking colorimetric results on leachate and high-strength effluent.
| 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.
Where colour or turbidity makes photometric COD unreliable, labs fall back on dichromate reflux and titration with ferrous ammonium sulfate. This setup supports ferroin or potentiometric endpoints and a 25 or 50 mL burette, with an automatic burette as an option. It is also the right tool for cross-checking colorimetric results on leachate and high-strength effluent.
| Parameter | Value |
|---|---|
| Method 方法 | Dichromate reflux with titration |
| Titrant 滴定剂 | 0.1 mol/L ferrous ammonium sulfate |
| Indicator 指示剂 | Ferroin or potentiometric |
| Range 量程 | 50–1000 mg/L typical with 0.25 N dichromate |
| Reflux time 回流时间 | 120 min |
| Sample volume 样品体积 | 10–20 mL |
| Burette 滴定管 | 25 mL or 50 mL, automatic option |
| Endpoint detection 终点检测 | Colour change or electrode potential |
| Catalyst 催化剂 | Silver sulfate with mercury sulfate masking |
| Data handling 数据处理 | Manual or automatic calculation |
| Model No. | COD-0003 |
| 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.
