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正己烷CH3(CH2)4CH3气体测毒管113SC n-HEXANE 5-800ppm
Tube 13SC
1. PERFORMANCE
1) Measuring range :20-800 ppm 5-200 ppm
Number of pump strokes 1(100ml) 3(300ml)
2) Sampling time :6 minutes/3 pump strokes
3) Detectable limit :2 ppm(300ml)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(TEMPERATURE CORRECTION TABLE is provided.)
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
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 deoxidized.
CH3(CH2)4CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
200
150
100
50
30
20
10
5
300ml
ppm
113SC n-HEXANE
Substance Interference ppm Coexistence
Methyl alcohol 500 Not affected.
Ethyl acetate 500 〃
Methyl ethyl ketone 500 〃
Toluene Brown stain is produced. Higher readings are given.
(NOTE)
In case of 1 pump stroke, following equation is available for the actual concentration.
Actual concentration=Temperature corrected value×4
TEMPERATURE CORRECTION TABLE
Tube Corrected Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
200 250 225 200 185 170
150 180 165 150 145 135
100 120 110 100 95 85
50 60 55 50 45 40
30 35 30 30 30 25
20 20 20 20 20 20
10 10 10 10 10 10