亚洲精品一区久久久久一品AV_老子影院午夜伦手机不卡国产_国产一区2区3区_欧美18aaaⅹxx_91免费在线看片_欧美一区免费看

13827090805

ChineseEnglish

contact us

Order hotline

0086-20-82670166    

tel:13825090805

E-mail:gzmaizhi@163.com

Add: 2 Floor B Building, XiaDeng Industrial Area,Xindun Village, XinTang Town, ZengCheng District, GuangZhou, China.



Blood collection tube invention and culture

A vacutainer blood collection tube is a sterile glass tube with a colored rubber stopper creating a vacuum seal inside of the tube facilitating the drawing of a predetermined volume of liquid.
Vacutainer tubes may contain additives designed to stabilize and preserve the specimen prior to analytical testing. Tubes are available with a safety-engineered closure (rubber stopper), with a variety of labeling options and stopper colors as well as a range of draw volumes.

Vacutainer tubes were invented by Joseph Kleiner and Becton Dickinson in 1949.
Culture

The purple top tube became an issue in the O.J. Simpson murder case when the defense alleged that small droplets of blood found at the crime scene contained the preservative EDTA. Had this been true, it would have meant that the droplet might have been taken from the purple top tube used to collect Simpson's blood and planted at the crime scene.

Drawing blood using a vacutainer. The clear plastic sheath around the top of the tube holds the needle. The orange guard will shield the needle after it is withdrawn from the patient to protect from accidental needle sticks.

Vacutainer needle are double ended, with one side being encased in a thin rubber coating for safety. When the needle is screwed into the translucent plastic needle holder, the rubber needle is inside the holder, and the exposed needle will be inserted into the vein. When a Vacutainer tube is inserted into the holder, its rubber cap is punctured by the inner needle and the vacuum in the tube pulls blood through the needle and into the tube. The filled tube is then removed and another can be inserted and filled the same way. The amount of air evacuated from the tube predetermines how much blood will fill the tube before blood stops flowing.

Each tube is topped with a color-coded plastic or rubber cap. Tubes often include additives that mix with the blood when collected, and the color of each tube's plastic cap indicates which additives it contains.
Blood collection tubes expire because over time the vacuum is lost and blood will not be drawn into the tube when the needle punctures the cap.
Share:
Relevant information:

    廣州市邁志醫(yī)療自動(dòng)化設(shè)備有限公司 Copyright© 2003-2017 技術(shù)支持:英銘 

    consultant

    tel

    Back To Top

    service

    service

    Service:
      13827090805

    主站蜘蛛池模板: 经典三级久久 | 五月婷久久 | 黑人一级片| 特黄特色特刺激免费播放 | 成人天堂婷婷青青视频在线观看 | 高潮的毛片激情久久精品 | 亚洲AV无码不卡私人影院 | 强奷很舒服好爽好爽 | 巨茎爆乳无码性色福利 | 国产一区二区三区四区五区tv | tube高潮| 日韩精品在在线一区二区中文 | 久久夜色噜噜噜av一区二区 | xxxxwwww中国| 欧美色悠悠 | 国产午夜无码片免费 | 日韩av不卡在线观看 | 日韩免费一级a毛片在线播放一级 | 国产亚洲精品日本亚洲网站 | 麻豆午夜影院 | 久久2017| 2021国产精品一卡2卡三卡4卡 | 欧美日韩中文字幕在线观看 | 伊人75在线 | 亚洲xxxxxxxxx | 久久综合九色综合97网 | 亚洲精品字幕在线观看 | 中国xxxxxx片免费播放 | 成人免费毛片片v | 波多野结衣AV最新作品在线观看 | 亚洲精品成人三区 | 国产亚洲精品久久久久久电影 | 超碰在线久 | 久久人爽爽人爽爽 | 午夜免费成人 | 欧美专区一区二区三区 | 超碰91在线播放 | 婷婷av综合 | 成人午夜高潮a∨猛片 | 亚洲中文字幕av每天更新 | 久久久一级片 |