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甲基异丁基酮气体检知管 155U METHYL ISOBUTYL KETONE 5-300ppm
Tube 55U
1. PERFORMANCE
1) Measuring range :5-300 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :2 ppm
4) Shelf life :2 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 :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)CHCH2COCH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
5
10
30
50
100
150
200
250
300
ppm
100ml
GAS To pump
DEHUMIDIFIER
(White)
155U METHYL ISOBUTYL KETONE
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Ethers 〃〃
(Amlipohrea ttich ahny dCr3o)carbons Wbrohwolne. reagent is changed to Pale 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
300 - - 300 230 190
250 - 380 250 195 165
200 - 290 200 155 130
150 355 210 150 120 100
100 220 130 100 80 70
50 90 65 50 40 35
30 55 40 30 25 25
15 15 10 15 8 8
5 7 5 5 5 5
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