Online Respirometric BOD Analyzer在线呼吸计量式 BOD 分析仪
- Measurement principle
- Continuous respirometry in a bioreactor
- Measuring range
- 0–500 mg/L BOD equivalent
余氯计

Photo for reference; configuration may vary by order.
Model No. CHM-0001 · Water Testing Equipment
便携式 DPD 余氯比色仪
Distribution samplers, pool operators and emergency teams can all check disinfection in the field with this handheld photometer. It reads free, combined and total chlorine using DPD tablets or powder pillows, covering 0–6 mg/L and a 0–200 mg/L high range on just 10 mL of sample. Free chlorine develops in 1 min.
| 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.
Distribution samplers, pool operators and emergency teams can all check disinfection in the field with this handheld photometer. It reads free, combined and total chlorine using DPD tablets or powder pillows, covering 0–6 mg/L and a 0–200 mg/L high range on just 10 mL of sample. Free chlorine develops in 1 min.
| Parameter | Value |
|---|---|
| Parameters 参数 | Free, combined and total chlorine |
| Ranges 量程 | 0–6 mg/L and 0–200 mg/L (high range) |
| Resolution 分辨率 | 0.01 mg/L at low range |
| Wavelengths 波长 | 515 nm and 555 nm for high range |
| Accuracy 准确度 | ±3 percent of reading |
| Sample volume 样品体积 | 10 mL |
| Development time 显色时间 | 1 min free, 2–3 min total |
| Reagent format 试剂形式 | DPD tablets or powder pillows |
| Data storage 数据存储 | Up to 1000 readings |
| Protection 防护等级 | IP67 |
| Model No. | CHM-0001 |
| 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.