standard substance

stan·dard sub·stance

a pure, authentic substance used for identification purposes.
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Unlike many standard substance use treatment programs, PHPs utilize a large drug test panel which typically includes over 20 substances, with even more expanded drug panels available for use as needed (DuPont et al.
1]]=solubility parameter of the standard substance (solvent) [(J/d[m.
infinity]]=Flory-Huggins parameter, parameter identifying the interaction between the standard substance and stationary phase [dimensionless],
0]molar volume of the standard substance in the column's operating temperature [d[m.
Flory-Huggins parameter is a parameter defining the interaction between the standard substance and the stationary phase, necessary for the deter mination of the solubility parameter, which can be calculated by means of the following equation:
1]=molecular mass of the standard substance [g/mol],
EMIT result 7-Aminoflunitrazepam Emit n Median (range), [micro] g/L 0 0 -- -- Negative, but >0 22 130 (80-180) 80 (60-120) Positive 100 350 (200-1000) 180 (60-1400) Emit + results are given as benzodiazepine equivalents with oxazepam as the standard substance.
Obosobena position 8 - Standard substances - 1 200 BGN; 9.
The difference is thatWestern medical practices require the side effects of medicinal substances to be clearly identified, explains Wei Lixin, a member of the Professional Commission of Ethnic Medicines and Traditional Chinese Medicines Standard Substances under the Chinese Pharmacopoeia Commission.
Four standard substances, certified for both density value and refractive index, can be used to certify or verify density and refractive index instruments or combined measurement systems.
The four proprietary standard substances can be used to certify or verify density and refractive index instruments or combined measurement systems.

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