氰化氫氣體檢測管12L Hydrogen cyanide
Hydrogen cyanide No.12L
CH3COCH3

Performance


MeasuringRange

0.36 to1.25ppm

1.25 to2.5 ppm

2.5 to 60 ppm

60 to120 ppm

Number of Pum

1

2

SamplingTime

2 minutes per pumpstroke

DetectingLimit

0.1 ppm (n=5)

ColorChange

Yellow → Red

ReactionPrinciple

2HCN +HgCl2 → Hg(CN)2+ 2HCl
HCl + base → Chloride product

Coefficient ofVariation
10% (for 2.5 to 20ppm), 5% (for 20 to 60 ppm)

ShelfLife 2Years
Correctionsfor
temperature & humidity Humidity correction is necessary
Store the tubes at cool and darkplace.



Possible coexisting substances and theirinterferences (NOTE)


Substance

Concentration

Interference

Change color by itself

Sulfurdioxide

20 ppm

Plus error

Reddiscoloration

Hydrogensulfide

5 ppm

Plus error

Reddiscoloration



Othersubstance measurable with this detector tube


Substance

Correction Factor

Pump Strokes

Measuring Range

Acetone cyanohydrine