三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

上海境宣實業有限公司
中級會員 | 第17年

17601355022

當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 183U甲酚C6H4(CH3)(OH)氣體檢測管183U CRESOL 0.5-25.0ppm

甲酚C6H4(CH3)(OH)氣體檢測管183U CRESOL 0.5-25.0ppm

參  考  價面議
具體成交價以合同協議為準

產品型號183U

品       牌

廠商性質代理商

所  在  地上海市

更新時間:2025-07-16 12:35:34瀏覽次數:1580次

聯系我時,請告知來自 化工儀器網
甲酚C6H4(CH3)(OH)氣體檢測管183U CRESOL 0.5-25.0ppm,便攜式臭氧檢測系統:在不用任何能源、電源的情況下,1分鐘內即可快速檢測出環境中的臭氧濃度,具有操作簡單、攜帶方便等特點。包括:臭氧氣體檢測管(檢測范圍:4-400ppm)、手動采樣器、5米延長采樣管、便攜式儀器箱

甲酚C6H4(CH3)(OH)氣體檢測管183U CRESOL 0.5-25.0ppm

1. PERFORMANCE
1) Measuring range :0.5-25.0 ppm
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :0.3 ppm
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :Pale yellow→Pale brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Cresol is oxidized and the polymer is produced.
CH3C6H4OH+Ce4+→CH3C6H4O→(CH3C6H4O)n
4. CALIBRATION OF THE TUBE
ABSORPTIOMETRIC METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
25.0
20.0
15.0
10.0
5.0
3.0
1.0
0.5
ppm

INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
25.0
20.0
15.0
10.0
5.0
3.0
1.0
0.5
ppm
????
????
????
????
????
????
Tube No.
183U CRESOL
88
Substance Interference ppm Coexistence
Phenols FIG.1 Similar stain is produced. 2.5 Higher readings are given.
Ammonia White stain is produced. 200 Discolouration of gas inlet side is
FIG.2 faded and higher reading are given.
Aliphatic amines 〃50 〃
Two layers discolouration of Pale
Aromatic amines Blue stain is produced. 50 brown and blue are produced and
higher reading are given.
(NOTE)
This tube scale is calibrated based on Phenol and the same scale is available for Cresol.
0
5
15
10
Phenol〔ppm〕?
FIG.1 Influence of Phenol
Cresol indicating value 〔ppm〕
5 0
5
15
10
Ammonia〔ppm〕?
FIG.2 Influence of Ammonia

會員登錄

×

請輸入賬號

請輸入密碼

=

請輸驗證碼

收藏該商鋪

X
該信息已收藏!
標簽:
保存成功

(空格分隔,最多3個,單個標簽最多10個字符)

常用:

提示

X
您的留言已提交成功!我們將在第一時間回復您~
撥打電話
在線留言
主站蜘蛛池模板: 永寿县| 赣州市| 永宁县| 玛多县| 商城县| 黑山县| 迁安市| 山东| 高邑县| 安化县| 临泉县| 时尚| 平乐县| 都安| 阿拉善右旗| 星座| 高雄县| 崇礼县| 万源市| 天全县| 青河县| 景谷| 瑞金市| 康定县| 乌什县| 安溪县| 都兰县| 高雄市| 胶州市| 墨竹工卡县| 威信县| 资中县| 西畴县| 伊川县| 乌兰浩特市| 台北县| 大厂| 佛学| 彩票| 华蓥市| 四会市|