日韩av大片在线观看欧美成人不卡|午夜先锋看片|中国女人18毛片水多|免费xx高潮喷水|国产大片美女av|丰满老熟妇好大bbbbbbbbbbb|人妻上司四区|japanese人妻少妇乱中文|少妇做爰喷水高潮受不了|美女人妻被颜射的视频,亚洲国产精品久久艾草一,俄罗斯6一一11萝裸体自慰,午夜三级理论在线观看无码

上海境宣實業(yè)有限公司
中級會員 | 第17年

17601355022

當前位置:上海境宣實業(yè)有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 216S馬來酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

馬來酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

參  考  價面議
具體成交價以合同協(xié)議為準

產(chǎn)品型號216S

品       牌

廠商性質代理商

所  在  地上海市

更新時間:2025-03-11 08:08:10瀏覽次數(shù):1462次

聯(lián)系我時,,請告知來自 化工儀器網(wǎng)
馬來酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm 別名:順丁烯二酸酐,,英文名稱 cis-Butenedioic anhydride ;maleic anhydride,,健康危害:本品粉塵和蒸氣具有刺激性,。吸入后可引起咽炎,、喉炎和支氣管炎,。可伴有腹痛,。眼和皮膚直接接觸有明顯刺激作用,,并引起灼傷。慢性影響:慢性結膜炎,,鼻粘膜潰瘍和炎癥,。有致敏性,,可引起皮疹和哮喘。

馬來酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

Tube No.216S
1. PERFORMANCE
1) Measuring range :1-50 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :0.2 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with alkali,PH indicator is discoloured.
CH3COOH+NaOH→CH3CO2Na+H2O
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
3
1
ppm
100ml
GAS To pump
5
10
20
30
40
50
216S ACETIC ACID
Substance ppm Interference ppm Coexistence
Sulphur dioxide Similar stain is produced. 1/20×Acetic Higher readings are given.
acid
Nitrogen dioxide 300 〃10 Unclear stain is produced.
Hydrogen chloride Pink stain is produced. 2×Acetic FIG.1 acid Higher readings are given.
Chlorine FIG.2 Yellow stain is produced. 5 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
50 63 57 50 45 40
40 50 45 40 36 31
30 37 33 30 27 23
20 24 22 20 18 16
10 12 11 10 9 8
5 6 6 5 5 4
3 4 4 3 3 2
1 1 1 1 1 1
0
50
30
20
40
10
Hydrogen chloride〔ppm〕?
FIG.1 Influence of Hydrogen chloride
Acetic acid indicating value 〔ppm〕
100 200 300
Coexistence
Interference
0
60
20
40
Chlorine〔ppm〕?
FIG.2 Influence of Chlorine

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