| 1. | However QBF-41 offers a sample tube of shaving cream free of charge.
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| 2. | Errors due to inefficient packing in the sample tube are difficult to eliminate.
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| 3. | One of the sampling tubes was located at the worst-case location within the aspiration lumen.
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| 4. | Crystal-clear cerebrospinal fluid dripped into the sample tubes.
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| 5. | Groundwater has been investigated from 15 observation and sample tubes and landfill gas in 20 separate points.
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| 6. | For each measurement, only around 250 mg of sample is required ( 50 mg can be used for a thin-bore sample tube ).
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| 7. | Where V _ { s } is the particle's settling velocity, d is the sampling tubes inner diameter, and g is the acceleration of gravity.
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| 8. | To a sealed chamber, the researchers connected air sampling tubes and an atomizer which could create a fine spray from cultures of bacteria in liquid.
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| 9. | With the vacuum tube system, the needle pierces the top of the sample tube and will potentially come into contact with the additives in the tube.
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| 10. | In the apparatus a fixed volume of sample oil is directly drawn from a sample tube into a degassing vessel under vacuum, where the gases are released.
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