What are colorimetric tubes used for?
Colorimetric tube technology has been used for many years to sample for specific gases in a specific area, such as a hazardous leak in an industrial setting. A chemical reagent changes colors to indicate the existence of hazardous vapors.
What does a Draeger tube measure?
These tubes are used e.g. for the determination of concentration peaks, the measurement of exposures in the inhalation area, the determination of possible leakages as well as for the analysis of air in sewers, shafts, tanks or other confined spaces.
How do you test for sulfuric acid?
Sulfuric acid detectors or H2SO4 gas detectors have different monitoring technologies (optical analysis or electrochemical gas sensors) to measure the presence of this gas and to alert in case of danger. H2SO4 gas – CAS 7664-93-9 – is one of the most widely used industrial chemical compounds in the world.
Are colorimetric indicator tubes accurate?
The American Industrial Hygiene Association (AIHA) in their manual, Direct-Reading Colorimetric Indicator Manual (Second Edition, 1993) makes the following statement on detector tube accuracy: The accuracy of detector tubes generally is considered to be +/-25% of the reading.
What is colorimetric titration?
Colorimetry is a more direct technique for measuring concentration: it looks at how much light was actually absorbed by the sample. Titration, by contrast, is an indirect method, since you are actually measuring how much reagent you added. Colorimetry requires the use of an instrument called a colorimeter.
What is a Draeger pump used for?
The Accuro manual hand pump from Draeger is used in an incredibly wide range of industries for gas detection. Scuba divers use it to test the air from their pumps for carbon monoxide (CO), carbon dioxide (CO2), oil mist, and water vapor.
How do you break a Draeger tube?
The first is to open up the tube. This must be done by breaking off the tips at either end and the casing can help with this. Insert the tube into the slit with the jagged edge. Running the tube up and down the jagged edge will help to weaken the glass and then it should simple enough for the tip to snap off.
How do you use a Draeger tube for benzene?
How to Use the Drager Accuro Pump
- STEP ONE: PERFORM A PUMP LEAK TEST. Firstly, insert an unopened tube into the socket.
- STEP TWO: OPEN BOTH ENDS OF THE TUBE. This can be done in two ways.
- STEP THREE: INSERT THE TUBE. Insert the tube into the Accuro pump with the black arrow facing inwards.
What is the formula of sulfuric acid?
H₂SO₄Sulfuric acid / Formula
What is another name for sulfuric acid?
oil of vitriol
sulfuric acid, sulfuric also spelled sulphuric (H2SO4), also called oil of vitriol, or hydrogen sulfate, dense, colourless, oily, corrosive liquid; one of the most commercially important of all chemicals.
What are the two most common types of detector tube devices?
Types of detector tube
- Short-term measurement detector tubes.
- Passive dositubes for time-weighted measurements.
- Detector tubes for Automatic air sampling pump.
- Airtec tubes.
- Polytec tubes.
- PYROTEC detector tubes.
- Injection type detector tubes.
- Detector tubes for dissolved substances in solution.