中文午夜乱理片无码,国产午夜精品一区二区三区极品,亚洲日本一区二区三区在线不卡 ,国产乱码日产精品bd,日本无码人妻精品一区二区蜜桃,精品人妻系列无码人妻在线不卡,国产成人精选视频在线观看不卡,午夜男女爽爽爽在线视频
Provide customers with high-quality precision equipment
A high-tech industry integrating R&D, production, sales and service of experimental equipment
Product Category
Ye Tuo HCA-102 COD Dissolver (Aluminum Block)

Product parameters:

Product model: HCA-102

Measurement range: 0-1000mg/L, 0-1000mg/L (water sample dilution)

Measurement time: no more than 2 hours

Measurement error: Potassium hydrogen phthalate standard solution (50mg/L), relative standard deviation not exceeding 5.0%; Industrial organic wastewater (5.00mg/L), relative standard deviation not greater than 8.0%

Environmental temperature: 5-40 ℃

Power supply voltage: AC 220V+22V, 50Hz

Cooling method: air cooling (dual fan)

Heating power: 2500W

Batch processing: 10 tubes of aluminum blocks


Product Quotation:Inquiry now

Ye Tuo HCA-102 COD Dissolver (Aluminum Block)


model: HCA-102


Product Overview:


COD reflux digester adopts glass burr reflux tube instead of spherical reflux tube, and uses air cooling technology instead of tap water cooling method. The cooling part is mainly completed by a burr condenser tube and a fan. The upper part of the condenser tube is spherical, and the catalyst is added from here to prevent the instantaneous evaporation of light components in the sample. The lower part is "burr" shaped, with two opposing spherical condenser tubes extending from the condenser tube wall on a plane. In addition, the dual effect of cooling water in the upper spherical reflux tube and the fan inside the machine ensures the reflux cooling of the sample.


This instrument strictly follows the determination steps specified in the national environmental protection department's standard analysis method "HJ 828-2017 Determination of Chemical Oxygen Demand (COD) in Water Quality - Dichromate Method (replacing GB 11914-89)", which specifies the conditions and indicators of the method, such as heating digestion time, solution acidity, oxidant and catalyst dosage. Following the basic principles of international standards (ISO) and national standards (GB), ensure the digestion operation of reflux heating and micro boiling for 2 hours, and prepare and add reagent solutions in accordance with the national environmental protection department's "HJ828-2017" dichromate method to ensure reliable and accurate analysis results.


Product features of Yetuo HCA-102 COD digestion instrument (aluminum block)


The number of two opposing spherical condensation bubbles extending from the condenser wall has increased to three cold bubbles, ensuring an improved condensation effect


● Automatically heat up to the set temperature, time digestion reflux, automatically stop heating, continue working of the cooling fan, assist in sample cooling


● Increase from 5 samples to multiple samples, 250ML flat bottomed triangular flask with dual heating, good bottom contact, and uniform heating. And it is convenient to operate sampling in dual channel mode


The new glass burr reflux tube and heat dissipation system ensure the accuracy of sample digestion results due to their excellent digestion reflux effect


Air cooling replaces the previous circulating water cooling, and the power and position of the fan are very important. Based on years of operating experience, improvements have been made, and high-quality domestic fans with reliable quality have been selected


The heating plate adopts a strip heating wire, which has a long service life. Uniform and consistent heating ensures the parallelism of sample digestion


Recommended Products
Follow us
Mobile station
  • Mobile:19961895916
  • Tel:19961895916
  • WeChat Account:上海葉拓科技
  • Email:yetuo@sh-yetuo.com
  • Address:C2-301, green window, No. 4, Lvdu Avenue
Copyright? 2025 Shanghai Yetuo Technology Co., Ltd  ICP備案號:滬ICP備20000740號-3 主站蜘蛛池模板: 99在线精品视频在线观看| 性暴力欧美猛交在线播放| 午夜片无码区在线观看爱情网| 精品久久久久久久免费影院| 欧美日产国产新一区| 2021亚洲国产精品无码| 丁香五月综合久久激情| 亚洲人成网线在线播放| 狠狠爱天天综合色欲网| 成人av鲁丝片一区二区免费| 人妻少妇伦在线无码| 久久精品无码一区二区三区不卡| 国产md视频一区二区三区| 欧美亚洲另类丝袜综合网| 中文字幕av中文字无码亚| 激情亚洲图片激情亚洲小说| 成人区精品一区二区不卡av免费| 青青狠狠噜天天噜日日噜| 老司机性色福利精品视频| 国产剧情麻豆女教师在线观看| 免费国产在线精品一区不卡| 天天做天天欢摸夜夜摸狠狠摸| 久久不卡国产精品无码| 亚洲精品无码不卡av| 亚欧日韩欧美网站在线看| 国产亚洲综合一区二区三区| 天堂在线最新版资源www中文| 欧洲熟妇色xxxx欧美老妇软件| 18禁强伦姧人妻又大又| 国产乱辈通伦影片在线播放亚洲| 久久久av波多野一区二区| 午夜131美女爱做视频| 亚洲gv猛男gv无码男同短文| 亚洲大色堂人在线无码| 亚洲人成绝费网站色www吃脚| 亚洲区欧美区综合区自拍区| 国产亚洲欧洲av综合一区二区三区| 在线观看片免费人成视频无码| 日韩精品无码二三区a片| 99热久re这里只有精品小草| 狠狠色丁香婷婷久久综合不卡|