Gastec 112L快速乙醇测量探测管 C2H5OH（50-2000ppm）

制造商: Gastec
Model: 112L
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技术规格
制造商消息

Indicator: 100 to 2000 ppm
Measuring Range:
+ 50 to 100 ppm, Number of Pump Strokes 2
+ 100 to 2000 ppm, Number of Pump Strokes 1
Sampling Time: 2 minutes per pump stroke
Colour Change: Pink → Pale blue
Reaction Principle: C2H5OH + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 100 to 500 ppm), 5% (for 500 to 2000 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Details

Performance

Measuring Range

50 to 100 ppm

100 to 2000 ppm

Number of Pump Strokes

Correction Factor

Sampling Time

2 minutes per pump stroke

Detecting Limit

15 ppm (n=2)

Colour Change

Pink → Pale blue

Reaction Principle

C2H5OH + Cr⁶⁺ + H2SO4 → Cr³⁺

Coefficient of Variation

10% (for 100 to 500 ppm), 5% (for 500 to 2000 ppm)

Shelf Life

3 Years

Corrections for temperature & humidity

Temperature correction is necessary

Store the tubes at cool and dark place.

Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change colour by itself to

Alcohols		+	Pale blue
Acetone	1000 ppm	No	No discolouration up to 1000 ppm
Ethyl Acetate	500ppm	No	No discolouration up to 500 ppm
Toluene	300ppm	No	No discolouration up to 300 ppm
Benzene	70ppm	No	No discolouration