Gas detector tubes

Gas detector tubes (and some relevant industrial standards)
Features / Relevant industrial standards / Other important standards
Comparison of major international industrial standards
SEI certification
SEI certification / SEI certification requirements
The NIOSH certification program
Gas sampling methods
Vacuum / Injection / Sampling pump / Compressed air / Diffusion
Vapour-liquid equilibrium / Reagent-adding / Capillary tube
Liquid aspiration
GASTEC quality assurance
GASTEC quality assurance / The prerequisites for optimal performance
Detector tube calibration gas
Calibration gas
Permeation tube / Diffusion tube / High pressure gas cylinder / Static dilution
Dynamic dilution
Additional measuring knowhow
Standard aspiration (sampling) volume
Extension of the measuring range
Accuracy tolerance when using detector tubes
Random errors / Systematic errors
Reaction principles
Direct reaction / 2. Compound reaction / 3. Two-step reaction
Effects of temperature
Correction for temperature / Effects of temperature variances
Effects of humidity
Effects of atmospheric pressure
Factors that cause atmospheric pressure to have an effect
Measures to correct/offset effects of atmospheric pressure
Interference gases (interferents)
Safekeeping and Storage of GASTEC gas detector tubes
Disposal of detector tubes
Units for measuring concentration
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