夜夜爽夜夜叫夜夜高潮漏水,13小男生GAY自慰脱裤子,亚洲国产精品美女久久久久AV,中文字幕丰满乱孑伦无码专区

產品列表PRODUCTS LIST

首頁>產品中心>日本光明北川式氣體檢測管>氣體快速檢測管>139SB日本KITAGAWA北川式甲乙酮氣體檢測管139SB METHYL ETHYL KETONE

日本KITAGAWA北川式甲乙酮氣體檢測管139SB METHYL ETHYL KETONE

簡要描述:

日本KITAGAWA北川式甲乙酮氣體檢測管139SB METHYL ETHYL KETONE 0.01-1.4%,識別性強。可以測定各種有害氣體,并可實現(xiàn)在一定程度上的選擇性識別。按檢測方法分,有比長、比色、比容式檢測管。比長式檢測管。一定體積的樣品通過檢測管使指示粉產生變色,根據(jù)變色長度來確定被測氣體的單位體積含量,這類檢測管靈敏度、準確度Z高,應用Z為廣泛。比色式檢測管。通過一定體積的樣品,根據(jù)指示粉產生的變色強弱度來確定被測氣體的單位體積含量。

更新時間:2024-12-19

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
日本KITAGAWA北川式甲乙酮氣體檢測管139SB METHYL ETHYL KETONE

日本KITAGAWA北川式甲乙酮氣體檢測管139SB METHYL ETHYL KETONE 0.01-1.4%

Tube 39SB

1. PERFORMANCE
1) Measuring range :0.01-1.4%
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :10 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 2 pump strokes
7) Colour change :Orange→Brownish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3COC2H5+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
0.01
0.05
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
%
200ml
GAS To pump
139SB METHYL ETHYL KETONE
Substance Interference ppm Coexistence
Whole reagent is discoloured to
Acetylene 3% Brown and higher readings are
given.
Propane 0.2% 〃
Other organic gases or vapours .
except Halogenated hydrocar- Similar stain is produced 50 Higher readings are given.
bons