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Taizhou Huachen Instrument Co., Ltd
Standard COD digester (12 tubes)
NegotiableUpdate on 05/06
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Overview
The HCA-112 standard COD digester (12 tubes) follows the basic principles of international standards (ISO) and national standards (HJ828-2017), ensuring a digestion operation with reflux heating and micro boiling for 2 hours. The preparation and addition of reagent solutions are consistent with the national standard method, ensuring reliable and accurate analysis results.
Product Details
Product Overview:
HCA-112Standard COD digester(12 tubes)Following the basic principles of international standards (ISO) and national standards (HJ828-2017), the digestion operation with reflux heating and micro boiling for 2 hours is ensured. The preparation and addition of reagent solutions are consistent with the national standard method, ensuring reliable and accurate analysis results.
The digestion device adopts microcomputer technology for timed control of the heating electric furnace, which can simultaneously heat 12 250ML cylindrical digestion reflux devices. To achieve the goals of energy conservation, reducing power load, and improving efficiency.
The instrument adopts a glass burr reflux tube instead of a spherical reflux tube, and uses air cooling technology instead of tap water reflux cooling. Static water is used as auxiliary cooling at the end of the condenser tube, which can save water and standardize the instrument, while also improving the safety of instrument use.
The chemical solution preparation, operation, and COD calculation of the instrument shall comply with HJ828-2017（replaceGB11914-89）For COD water samples below 50mg/L, the accuracy can be improved by diluting the titrant and oxidant. For COD water samples above 700mg/L, the measurement can be completed by diluting the water sample proportionally.
Performance characteristics:
Adopting a new type of rare earth alloy strip wave heating wire flat furnace plate, the surface is covered with a microcrystalline glass panel that can withstand high temperatures up to 800 ℃. The electric heating wire has an extremely long service life, and the surface heats up uniformly during heating, with fast heating and cooling rates.
The furnace plate uses a new type of high-temperature resistant inorganic environmentally friendly insulation material, which has low heat loss in the bottom plate and surrounding areas, uniform heating and thermal conductivity, and higher thermal efficiency.
The surface of the high-temperature resistant microcrystalline glass panel of the flat electric furnace is easy to clean. If the sample solution accidentally drips on it, simply wipe it dry with a cloth to reduce damage to the instrument caused by improper operation.
Improved glass burr reflux tube and heat dissipation system ensure good digestion reflux effect and parallelism of sample digestion results.
Users can choose different digestion temperatures according to their needs, and the instrument can display the surface temperature of the electric furnace plate during operation.
The digestion time can be set. After digestion is completed, the instrument automatically stops heating, and the instrument fan continues to work for one hour to assist in sample cooling. It can be left unattended.
Saving electricity and water, improving efficiency, and enhancing the safety of instruments.
Technical specifications:
Execution standard: HJ 828-2017 (replaces GB11914-89)
Number of dissolved samples: 12
Dissolving bottle capacity: 250ml cylindrical bottle
Sampling volume: 10.0ml
Detection limit: 4 mg/L
Determination lower limit: 16 mg/L
Measurement range: The upper limit for measuring undiluted water samples is 700mg/L (for water samples greater than 700mg/L, it is measured after dilution)
Temperature control range: 140-350 degrees(with temperature display,Temperature control accuracy: ≤± 1%)
Dissolving time: 10 minutes to 2 hours and 30 minutes (user adjustable)
Measurement error: meets the relevant requirements of HJ 828-2017
Environmental temperature: ≤ 35 ℃
Heating power: 1600W（AC 220V，50HZ）
Heating panel: Microcrystalline glass heating panel
Instrument size: 440mm (L) * 320mm (W) * 560mm (H)
Note:Legal Notice on the Registration of Trademark "HCA" by Taizhou Huachen Instrument Co., Ltd
HCA-112Standard COD digester (12 tubes)Specific operational steps:
Add 10ml of sample to a 250mL digestion bottle with a standard grinding mouth of No. 24, 5.0mL of 0.250mol/L potassium dichromate standard solution, and several factory prepared explosion-proof boiling magnetic beads (glass beads are not recommended), shake well. Connect the digestion bottle to the lower end of the burr condenser tube. Slowly add 15mL of silver sulfate sulfuric acid reagent from the top of the condenser tube. To prevent the escape of low boiling point organic matter, the digestion bottle should be continuously rotated to mix evenly. After pressing the "Start" button, the instrument automatically starts digesting the sample according to the set digestion time and temperature; After setting the digestion time, the instrument stops heating, and the time display on the digital tube shows 0:00; After one hour, the cooling fan on the back panel of the instrument stops rotating. After cooling, rinse the condenser with 40mL of distilled water from the top of the condenser, remove the digestion bottle, and dilute with distilled water to about 70mL. After cooling the solution to room temperature, add 3 drops of 1,10-phenanthroline indicator solution and mix evenly. Titrate with sulfuric acid ferrous ammonium standard titration solution, and the color of the solution changes from yellow to reddish brown, which is the endpoint.
HCA-10X Standard COD Dissolver Environmental Monitoring Station System Main Users
Beijing Municipality:
National Environmental Monitoring Center Station Beijing Environmental Monitoring Center Station Beijing Daxing District Environmental Monitoring Station Beijing Mentougou Environmental Monitoring Station Beijing Fengtai District Environmental Monitoring Station Beijing Shijingshan Environmental Monitoring Station Beijing Miyun Environmental Monitoring Station Beijing Shunyi Environmental Monitoring Station Beijing Yanqing Environmental Monitoring Station Beijing Haidian Environmental Monitoring Station Beijing Xicheng Environmental Monitoring Station Beijing Dongcheng Environmental Monitoring Station Beijing Chongwen Environmental Monitoring Station Beijing Fangshan Environmental Monitoring Station Beijing Pinggu Environmental Monitoring Station Beijing Huairou Environmental Monitoring Station Beijing Xuanwu Environmental Monitoring Station Beijing Chaoyang Environmental Monitoring Station Beijing Changping Environmental Monitoring Station
Jiangsu Province:
Nanjing Environmental Monitoring Station Wuxi Huishan District Environmental Monitoring Station Suzhou Environmental Monitoring Center Station Wuxi Binhe District Environmental Monitoring Station Nantong Environmental Monitoring Center Station Yangzhou Hanjiang District Environmental Monitoring Station Suzhou New District Environmental Monitoring Station Kunshan Environmental Monitoring Station Changshu Environmental Monitoring Station Wujiang Environmental Monitoring Station Qidong Environmental Monitoring Station Zhangjiagang Environmental Monitoring Station Suqian Environmental Monitoring Station Lianyungang Environmental Monitoring Station Huai'an Environmental Monitoring Station Changzhou Environmental Monitoring Station Jiangyin Environmental Monitoring Station Taicang Environmental Monitoring Station Rugao Environmental Monitoring Station Tongzhou Environmental Monitoring Station Haimen Environmental Monitoring Station Jiangdu Environmental Monitoring Station Taizhou Environmental Monitoring Station Jiangyan Environmental Monitoring Station Xinghua City Environmental Monitoring Station Jingjiang City Environmental Monitoring Station Gaogang City Environmental Monitoring Station Hai'an County Environmental Monitoring Station Nanjing City Urban Drainage Monitoring Station
Chongqing City:
Chongqing Environmental Monitoring Center Station Fuling District Environmental Monitoring Station Wanzhou District Environmental Monitoring Station Yuzhong District Environmental Monitoring Station Dadukou District Environmental Monitoring Station Jiangbei District Environmental Monitoring Station Shapingba District Environmental Monitoring Station Jiulongpo District Environmental Monitoring Station Nan'an District Environmental Monitoring Station Beibei District Environmental Monitoring Station Wansheng District Environmental Monitoring Station Shuangqiao District Environmental Monitoring Station Yubei District Environmental Monitoring Station Banan District Environmental Monitoring Station Qianjiang District Environmental Monitoring Station Changshou District Environmental Monitoring Station Jiangjin District Environmental Monitoring Station Hechuan District Environmental Monitoring Station Yongchuan District Environmental Monitoring Station Nanchuan District Environmental Monitoring Station Chongqing Xiushan County Zhonghe Town Environmental Monitoring Station Chongqing Qijiang District Environmental Monitoring Station
Tianjin City:
Tianjin Environmental Monitoring Center Station Tianjin Hedong District Environmental Monitoring Station Tianjin Heping District Environmental Monitoring Station Tianjin Nankai District Environmental Monitoring Station
Shanghai Municipality:
Shanghai Environmental Monitoring Center Station Xuhui District Environmental Monitoring Station Chongming County Environmental Monitoring Station
Anhui Province:
Anhui Environmental Monitoring Center Station Hefei Environmental Monitoring Station Bengbu Environmental Monitoring Station Lu'an Environmental Monitoring Station Xuancheng Environmental Monitoring Station and County Environmental Monitoring Station Maanshan Environmental Monitoring Station Mount Huangshan Environmental Monitoring Station Huaihe River Basin Water Environment Monitoring Center Anhui Wuhu Environmental Monitoring Center Station Anhui Wuhe County Environmental Monitoring Station Anhui Tianchang Environmental Monitoring Station Anhui Huaibei Environmental Monitoring Station
Hunan Province:
Hunan Chenzhou Environmental Monitoring Station Yueyang Environmental Monitoring Station Hunan Yiyang Environmental Monitoring Station Shaoyang Environmental Monitoring Station
Hubei Province:
Hubei Provincial Environmental Monitoring Station Wuhan Environmental Monitoring Center
Zhejiang Province:
Zhejiang Provincial Environmental Monitoring Center Station Shaoxing County Environmental Monitoring Station Taizhou City Environmental Monitoring Station Quzhou City Environmental Monitoring Station Shaoxing City Environmental Monitoring Station
Henan Province:
Henan Environmental Monitoring Center Station Zhengzhou Environmental Monitoring Station Xinxiang Environmental Monitoring Station Anyang Environmental Monitoring Station Nanyang Environmental Monitoring Station Jiaozuo Environmental Monitoring Station Jiyuan Environmental Monitoring Station Song County Environmental Monitoring Station Yichuan County Environmental Protection Bureau
Hebei Province:
Hebei Province Baoding City Environmental Monitoring Station Chengde City Longhua County Environmental Monitoring Station
Liaoning Province:
Liaoning Environmental Monitoring Center Station Shenyang Environmental Monitoring Center Station Dalian Environmental Monitoring Center Jinzhou District Environmental Monitoring Station Jinzhou Huajing Monitoring Station Shenyang Heping District Environmental Monitoring Station Huanggutun District Environmental Monitoring Station Dalian Xigang District Environmental Monitoring Station Dalian Ganjingzi District Environmental Monitoring Station
Jiangxi Province:
Nanchang Environmental Monitoring Center Station, Nanchang County Environmental Monitoring Station, Jiangxi Province
Shanxi Province:
Shanxi Provincial Environmental Monitoring Center Station Linfen City Environmental Monitoring Station
Yunnan Province:
Kunming Environmental Monitoring Station Qujing Environmental Monitoring Station Yuxi Environmental Monitoring Station Lijiang Environmental Monitoring Station Zhaotong Environmental Monitoring Station Simao Environmental Monitoring Station Lincang Environmental Monitoring Station Baoshan Environmental Monitoring Station Chuxiong Prefecture Environmental Monitoring Station Pu'er City Environmental Monitoring Station
Guangdong Province:
Guangzhou Environmental Monitoring Center Station Guangzhou Huangpu Development Zone Monitoring Station Guangzhou Yuexiu District Environmental Monitoring Station Maomin City Environmental Monitoring Station, Zhanjiang City Environmental Monitoring Station, Foshan City Environmental Monitoring Station, Huizhou City Environmental Monitoring Station, Shaoguan City Environmental Monitoring Center Station, Heyuan City Environmental Monitoring Station, Xinxing County Environmental Monitoring Station
Sichuan Province:
Chengdu Environmental Monitoring Center Station Panzhihua Environmental Monitoring Station Suining Environmental Monitoring Station
Qinghai Province:
Qinghai Provincial Fishery Environment Monitoring Station, Qinghai Provincial Environmental Monitoring Center Station, Xining City Environmental Monitoring Station
Gansu Province:
Gansu Environmental Monitoring Center Station Lanzhou Environmental Monitoring Station Qingyang Environmental Monitoring Station
Inner Mongolia:
Hohhot Environmental Monitoring Center Station Etuokeqian Banner Environmental Monitoring Station Inner Mongolia Ulanhot Environmental Protection Monitoring Station Inner Mongolia Keyouqian Banner Environmental Protection Monitoring Station
Xinjiang:
Urumqi Environmental Monitoring Center Station, Xinjiang
Xizang:
Xizang Autonomous Region Environmental Monitoring Center Station
