The phrase "analyzed for the quantity" is correct and usable in written English.
It can be used in contexts where data or samples are being examined to determine their amount or volume.
Example: "The samples were analyzed for the quantity of contaminants present in the water."
Alternatives: "assessed for the amount" or "evaluated for the volume".
RNA samples were analyzed for their quantity and quality and further processed for the microarray hybridization on 12 × 135 K Roche NimbleGen arrays.
With the 2100 Expert® software, the isolated RNA was analyzed for quantity and quality using the Agilent 2100 Bioanalyzer (Agilent Technologies, Palo Alto, CA, using the RNA 6000 Pico Series II assay).
The purified mRNA was analyzed for quality and quantity using the Eukaryote Total RNA Pico assay of the Agilent 2100 Bioanalyzer (Agilent Technologies, Böblingen, Germany).
The RNA was analyzed for quantity and quality on the Bioanalyzer (Agilent) and a standard spectrophotometer (Agilent).
Amplified RNA was analyzed for quantity and quality on the Bioanalyzer 2100 (Agilent) using the Agilent Total RNA Nano Chip assay.
Total RNA from U2OS, MG63 cells and osteoblasts was extracted using the TRIzol reagent according to the manufacturer's instructions (Invitrogen), and analyzed for quantity and quality using bio-analyzer (Agilent Technologies, USA).
After the campaigns, the RNA samples were analyzed for quantity and quality by NanoDrop spectrophotometry and a bioanalyzer analysis, and only samples with an RNA integrity number (RIN) higher than 8.7 were chosen for subsequent microarray analysis.
Then RNA was analyzed for quality and quantity by measuring the A260/A280 ratio with ultraviolet spectrophotometry.
SP (Fansidar; Roche) and the locally manufactured SP were analyzed for quantity of active ingredient by using in vitro dissolution testing protocols according to procedures outlined in the United States Pharmacopeia and by high-performance liquid chromatography (HPLC).
