Sentence examples for standard were added from inspiring English sources

The reaction was stopped with 1 mL of methanol and 30 μL 1 N HCl before 500 μL PBS and 200 ng PGB1 (internal standard) were added.

Spiked samples were prepared in the same steps, except a known amount of ractopamine standard were added to the pork sample before treatment.

Spiked samples were prepared in the same steps, except a known amount of CLP standard were added to the pork samples before treatment.

Reaction mixture and internal standard were added to each cell extract and transferred to a thermal cycler.

Then, 25 µl sample or standard were added with 200 µl working reagent in duplicates to a microplate.

Briefly, 96-well microplates were coated with native HBs and after washing and blocking steps, dilutions of serum samples, controls and standard were added to the plate.

Five-hundred picoframs of 13C6-IAA internal standard was added to each sample before purification.

Methanol:toluene 2 ml (4:1 v/v) (containing C19 0 (20 μg/ml) as internal standard) was added to the sample.

In this case, no reference standard was added.

A standard concentration of 5 µg/ml SOR (internal standard) was added to the solutions.

The standard was added to the organic nitrogen compound-enriched fraction prior to GC-MS analysis.