www.cgongxi.com-国产日产久久高清欧美一区WW,国产在线观看无码免费视频,国产日产久久高清欧美一区WW,国模欢欢炮交啪啪150P

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>216S馬來(lái)酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

馬來(lái)酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

簡(jiǎn)要描述:

馬來(lái)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(chēng) 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??砂橛懈雇?。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。

更新時(shí)間:2024-07-14

在線(xiàn)留言
馬來(lái)酸酐C4H2O3氣體檢測管216S MALEIC ANHYDRIDE 0.2-10ppm

馬來(lái)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

英山县| 忻城县| 新昌县| 江北区| 镇江市| 大渡口区| 赞皇县| 榆树市| 太谷县| 乌鲁木齐县| 门头沟区| 扎兰屯市| 建水县| 射阳县| 青海省| 桐柏县| 哈尔滨市| 舟曲县| 扎鲁特旗| 大方县| 克东县| 宁陵县| 新丰县| 富民县| 疏勒县| 武义县| 通河县| 淮北市| 沭阳县| 开鲁县| 岢岚县| 搜索| 海原县| 阳朔县| 闸北区| 丰宁| 沧源| 忻州市| 佛教| 噶尔县| 五华县|