亚洲中文字幕啪啪一区二区,看亚洲欧洲在线视频,国产福利不卡在线视频,欧美日韩一区二区人妻

產(chǎn)品列表PRODUCTS LIST

首頁>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>171SC甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

簡要描述:

甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm,新裝修的房子里一般甲醛都會超標(biāo),只要在新房里放上一兩盆吊蘭,甲醛就全部都會被吸收。家庭去除甲醛的辦法在室內(nèi)甲醛含量超過國家標(biāo)準(zhǔn)1倍以上時(shí),就需要從根源上去除甲醛了,目前Z有效的方法是植物草本噴劑去除甲醛。光觸媒、植物去除、甲醛清除劑、空氣凈化器、純中草藥噴劑分解法。甲醛去除是一個(gè)緩慢的過程(家庭裝修中的甲醛釋放周朝一般是3到15年)。人體接觸可以清水沖洗。工作環(huán)境中有甲醛可以戴防毒口罩。家庭裝修盡量不要使用太多

更新時(shí)間:2025-01-01

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

Tube 71SC

1. PERFORMANCE
1) Measuring range :0.1-4.0 ppm 0.05-2.0 ppm
Number of pump strokes 5(500mr) 10(1000ml)
2) Sampling time :5 minutes/5 pump strokes
3) Detectable limit :0.03 ppm(1000ml)
4) Shelf life :1 year (Necessary to store in a refrigerated place ; 0~10℃)
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 5 pump strokes
8) Colour change :Yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reaction with Hydroxylamine phosphate acid is liberated and PH indicator is discoloured.
HCHO+(NH3OH)3?H3PO4→H3PO4+HCH=NOH+H2O
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
4.0
3.0
2.0
1.0
0.1
0.5
0.3
500ml
ppm
(White)
DEHUMIDIFIER
171SC FORMALDEHYDE
Substance ppm Interference ppm Coexistence
Ammonia
The accuracy of readings is 10 Lower readings are given. Inlet
not affected. side is faded the discoloured layer.
Higher readings are given. The
Nitrogen dioxide 3 Similar stain is produced. 3 top of discoloured layer becomes
unclear.
Acetaldehyde 〃Higher readings are given.
Toluene
The accuracy of readings is
not affected.
TEMPERATURE CORRECTION TABLE
Tube Corrected Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
4.0 6.4 4.0 2.4 1.6
3.5 5.6 3.5 2.1 1.4
3.0 4.8 3.0 1.8 1.2
2.5 4.0 2.5 1.5 1.0
2.0 3.2 2.0 1.2 0.8
1.5 2.4 1.5 0.9 0.6
1.0 1.6 1.0 0.6 0.4
0.5 0.8 0.5 0.3 0.2
0.3 0.5 0.3 0.18 0.12
0.1 0.16 0.1 0.06 0.04
(NOTE)
In case of 10 pump strokes, following formula is available for the actual concentration.
Actual concentration = 1/2 × Tmperature corrected value

 
欧美激情国产精品视频一区| 精品视频一区二区三区美女视频| 久久精品一本无码免费| 中文人操人人插人免费看视频| av中国一区二区三区| 国产r级亚洲r级在线观看| 韩国三级大尺度床戏网站| 95精品视频在线观看| 国产一区二区与亚洲av| 亚洲中文字幕国产综合| 婷婷激情网五月天亚洲| 久久综合视频三级黄片| 久草视频在线视频在线视频在线观看| 国产三级视频在线观看网站| 99国产精品视频在线| 日韩插久久一区二区三区综合| 欧美日韩制服丝袜中文字幕| 国产乱老熟女乱老熟女视频| 日本在线观看精品综合| 国产麻豆精品三级在线播放| 亚洲综合精品欧美日韩一区二区三区91| 欧美日韩国产综合在线视频| 久久久久久久久久久极品| 波多野结衣av一区二区| 一区二区日韩av激情| 2021国产三级精品三级在专区| 五月天丁香花婷婷色| 日本无人区一区二区三区| 国产69精品久久久久久老妇| 国产亚洲欧美另类网爆在线| 国语自产拍无码精品视频在线| 日本视频高清一区二区| 在线一区欧美日韩国产| 亚洲欧洲日韩综合网站| 精品国产_亚洲人成在线| 国产高清国内精品福利免费| 精品日韩一区二区电影| 国语自产拍无码精品视频在线| 欧美大片免费看片入口| 欧美成人3p视频在线观看| 91蜜臀综合99国产区|