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One gram of sample was placed between porous sandstone cylinders with diameters of 25 mm and porosity of approximately 18%.
One gram of sample (soil) is first digested in 10 ml strong sulfuric acid in the presence of 8 g catalyst (containing 96%% potassium sulfate, 3.5 % copper sulfate, and 0.5 % selenium dioxide) which helps in the conversion of the nitrogen to ammonium ions.
One gram of sample material was weighed into a PTFE vessel before 15 ml 7 M HNO3 was added.
One gram of sample was cut from different locations, minced with scissors and transferred into a plastic bag containing 7 mL 0.9% HPC.
One gram of sample (either wheat or cereal) was weighed into a 50-mL tube and 10 mL of a 1% aqueous solution of NaHCO3 (pH 8.1) was added to extract ochratoxins from wheat or cereal samples.
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To one gram of dried sample, 16 mL of HNO3/H2O2 (6/2, v/v) of solution were added.
One gram of compost sample was added to 9 ml of sterile distilled water in a test tube to get 10−1 dilution which was serially diluted.
One gram of carbon sample was placed in 50 ml of the solution containing 0.05 N of sodium hydroxide, 0.05 N of sodium carbonate, and 0.05 N of sodium bicarbonate.
One gram of composite sample was incubated in 100 mL of PBS at room temperature, and 5-mL solutions recovered at various times up to 80 h were analyzed by ICP/AES.
One gram of each sample was quantitatively transferred to a 100 mL volumetric flask and dissolved in 50 mL water and completed to volume with the same solvent to produce a stock solution of 1% (w/v).
The digestion procedure involved adding slowly and in portions 50 mL of freshly prepared 1 1 (v:v) H2O2 (30%): HNO3 (65%) to one gram of each sample, then covered and kept for 2 days.
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CEO of Professional Science Editing for Scientists @ prosciediting.com