2 Nanjing Huadu Environmental Protection Equipment Co., Ltd. HD02-I Chemical Oxygen Demand Analyzer Quality (Approved)No. 2005-023
3 Jiangsu Luye Environmental Protection Technology Instrument Co., Ltd. JHC-ⅲ COD Automatic Detector Quality (Accreditation) No.2005-024
4 Wuxi Chen Chuang Technology Co., Ltd. COD water quality online automatic monitoring instrument quality (approved)
No. 2005-025
5 Nanjing Linde Environmental Protection Instrument Co., Ltd. DL200 1A CODCr Automatic Online Analyzer Quality (Accreditation)No. 2005-026
6 Guangzhou Wen Yi technology co., ltd EST-200 1 COD online automatic monitoring instrument quality (approval) No.2005-027.
7 Beijing Zhonghuanfa Environmental Technology Group Automatic COD Analyzer Quality (Approval) No.2005-025
8 Wuhan Taiken Environmental Protection Technology Co., Ltd. TKC- 1 COD Online Automatic Monitor Quality (Approved)No. 2006-025
9 Jinzhou Huaguan Environmental Technology Industrial Company HG-CODCr- 1 Automatic Chemical Oxygen Demand (CODCr) DetectorNo. 2006-028
10 Beijing botek technology development co., ltd Eiox 100On-lne, COD rapid analyzer No.2006-029.
1 1 Hangzhou fuming environmental technology co., ltd WD2 100COD online detector No.2006-035
12
Shenzhen Century Tianyuan Environmental Protection Technology Co., Ltd.
Step COD water quality on-line analyzer
Quality (recognition)No. 2007-008
13
Nanjing zemei environmental protection equipment co., ltd
ZM-3000 CODCr on-line automatic analyzer
Quality (recognition)No. 2007-009
14
Changsha huashijie environmental protection science and technology development co., ltd
HSJ-CODcr COD on-line monitor
Quality (recognition) No.2007–015
15
Nanjing panda seiki co., ltd.
Panda P9829 CODcr water quality online automatic monitoring instrument
Quality (recognition) No.2007–017
16
American HACH company
Online chemical oxygen demand analyzer
Quality (recognition)No. 2007-029
17
Hu' nan Lihe science and technology development co., ltd
Model LFCOD-2002 COD on-line automatic analyzer
Quality (Recognition) ZiNo. 2007-03 1
18
Nanjing ruiquan environmental protection technology co., ltd
RenQ-IV automatic analyzer for chemical oxygen consumption
Quality (recognition)No. 2007-033
19
Hebei Chineydy environment monitoring equipment technology co., ltd
CZJ COD water quality online automatic monitoring instrument
Quality (recognition)No. 2007-036
20
Zhongke Tian Rong (Beijing) Technology Co., Ltd.
SDY COD water quality online automatic monitoring instrument
Quality (recognition)No. 2008-002
2 1
Shanghai precision scientific instrument co., ltd
COD-580 On-line Chemical Oxygen Demand Monitor
Quality (recognition)No. 2008-003
22
Hubei Pangu Environmental Protection Engineering Technology Co., Ltd.
PG-2 On-line Water Quality Monitor (COD)
Quality (recognition)No. 2008-005
23
Nanjing hongkai environmental protection technology co., ltd
HK2007A automatic on-line analyzer for chemical oxygen demand
Quality (recognition)No. 2008-009
24
Juguang Technology (Hangzhou) Co., Ltd.
COD-2000 on-line analyzer
Quality (Recognition) ZiNo. 2008-0 10
25
Beijing huanke environmental protection technology company
HBCOD- 1 online chemical oxygen demand analyzer
Quality (recognition)No. 2008-020
26
Shimadzu International Trade (Shanghai) Co., Ltd.
CODcr-4 100 COD on-line water quality monitor
QZZ No.2008–021
27
Jiangsu Linde environmental protection technology co., ltd
DL200 1ACODcr automatic on-line analyzer
Quality (recognition)No. 2008-022
28
Zhejiang Mao Huan automatic control technology co., ltd
Multi-vision COD water quality online automatic monitor
Quality (recognition)No. 2008-023
29
Yuxing Technology Development (Shenzhen) Co., Ltd.
Online automatic monitor
Quality (recognition)No. 2008-024
30
Jiangsu lvye environmental protection technology instrument co., ltd
JHC-Ⅲ A Automatic Chemical Oxygen Demand Detector
Quality (recognition)No. 2008-026
3 1
Beijing ankong technology co., ltd
E682 1 CODcr on-line monitor
Quality (recognition)No. 2008-027
32
Shandong Hisense environment protection co., ltd
HSOL-0 1 Hisense online COD monitor
ZhiziNo. 2008-034
33
Ji' nan mainland mechanical and electrical co., ltd
DL- 100 COD online monitor
Quality (recognition)No. 2008-035
34
Guangzhou Wen Yi technology co., ltd
EST-200 1B COD online automatic water quality monitor
Quality (recognition)No. 2008-038
35
Pangang Huitong science and technology industry co., ltd
TB-A-200 1CODcr online automatic water quality monitor
ZhiziNo. 2008-044
36
Taiyuan Lv Zhong Environmental Protection Technology Co., Ltd.
TGH tin chemical oxygen demand water quality online automatic monitor
Quality (recognition)No. 2008-045
37
Shanghai zhonghuan dida environmental protection instrument co., ltd
Model 620C COD water quality online automatic monitoring instrument
Quality (recognition)No. 2009-003
38
Hubei haiweili machinery co., ltd
HWJ-800A CODcr automatic on-line analyzer
Quality (recognition)No. 2009-004
39
Beijing Puxi General Instrument Co., Ltd.
TW-6000 CODcr continuous automatic water quality monitor
Quality (recognition)No. 2009-009
40
Hebei Xianhe science and technology development co., ltd
XH-9005 Chemical Oxygen Demand Online Monitor
QZZ No.2009–010
4 1
Lanzhou Lianhua environmental protection technology co., ltd
5B-5 COD online fast detector
Quality (Accreditation) No.2009–011
Forty two.
Jiangyan brilliance instrument co., ltd
HCA-200COD on-line monitor
Quality (recognition) No.2009–013
43
Zhejiang bridge Liu shui Huan Jing technology co., ltd
FW-2004CODcr online automatic monitoring analyzer
Quality (recognition) No.2009–014
Forty-four
Shengli oilfield longfa industry & trade co., ltd
LFH200 1 COD automatic analyzer
Quality (recognition)No. 2009-022
45
Shandong province hengda environment protection co., ltd
SHZ- 1 COD water quality online automatic monitor
Quality (recognition)No. 2009-023
46
He' nan ganzheng environmental protection equipment co., ltd
QZ5000CODcr COD tester
Quality (recognition)No. 2009-024
47
Beijing Lida Kexin Environmental Safety Technology Co., Ltd.
KS2202 On-line Monitoring Instrument for Water Quality CODcr
Quality (recognition)No. 2009-025
48
Beijing ankong technology co., ltd
E68 1 1 COD water quality online automatic monitor
Quality (recognition)No. 2009-026
Laboratory, it should be said that HACH is the most, followed by WTW and Merck, which belong to the same family and are connected with two brands. Followed by Hanna, thermoelectric and other domestic Lianhua, but it is the most rubbish. There are also Qingdao Laoshan and Jiangyan, and the best quality may be from Shanghai and Europe.
It is estimated that hach is the most on the Internet, but it is rubbish, but it is preconceived, occupies the market, often breaks down, and the maintenance cost is super expensive. Then there is Lal in Germany.