Betekenis van:
microgram

Voorbeeldzinnen

1. Non-dioxin-like PCBs results of every congener should be reported in ppb — microgram/kilo (μg/kg).
2. 1 U is the amount of enzyme which makes 1 microgram of azo-casein soluble in trichloracetic acid per minute at pH 7,5 and 37 °C.
3. The microgram balance used to determine the weight of all filters shall have accuracy of 5 μg (standard deviation) and readability of 1 μg.
4. 1 U is the amount of enzyme which liberates 1 microgram of phenolic compound (tyrosine equivalents) from a casein substrate per minute at pH 7,5 and 40 °C.
5. To determine the mass of the particulates, a particulate sampling system, particulate sampling filters, microgram balance, and a temperature and humidity controlled weighing chamber, are required.
6. Non-dioxin-like PCBs results of every congener should be reported in ppb — nanogram/gram or microgram/kilo (ng/g or μg/kg).
7. SI units: kilogram, microgram, milligram, gram, tonne, imperial unit: troy ounce, if weighing precious metals, other non-SI unit: metric carat, if weighing precious stones. For instruments that make use of the imperial unit of mass referred to above, the relevant essential requirements specified below shall be converted to that unit, using simple interpolation.
8. In multi-cylinder engines having distinct groups of manifolds, such as in a “Vee” engine configuration, it is recommended to combine the manifolds upstream of the sampling probe. If this is not practical, it is permissible to acquire a sample from the group with the highest particulate emission. Other methods which have been shown to correlate with the above methods may be used. For exhaust emission calculation the total exhaust mass flow shall be used. To determine the mass of the particulates, a particulate sampling system, particulate sampling filters, a microgram balance, and a temperature and humidity controlled weighing chamber, are required. For particulate sampling, the single filter method shall be applied which uses one filter (see section 4.1.3) for the whole test cycle. For the ESC, considerable attention must be paid to sampling times and flows during the sampling phase of the test.