Guides, updates and educational content on laboratory testing, analysis & research.
Search scientific papers and journals by keyword, author, title or DOI.
17-Hydroxyprogesterone (17-OHP) – Serum Test Summary: What it is: A hormone made by the adrenal glands and gonads; a precursor to…
Read Article Book Tests
Alpha cellulose, the portion of cellulose insoluble in 17.5% sodium hydroxide, is determined by treating 3 g of pulp or holocellul…
Read Article Book Tests
To determine ash-free lignin content, 1 g of sample is treated with 20 ml of 72% sulfuric acid in a 100 ml beaker, stirred, and le…
Read Article Book Tests
Ash was determined by burning the material in a muffle furnace in a porcelain crucible first at 400°C for 30 minutes, then at 850°…
Read Article Book Tests
A few grams of sample were dissolved in 0.5 ml of deuterated solvent, transferred to an NMR tube, and analyzed using an Nanalysis…
Read Article Book Tests
Thermogravimetric analysis (TGA) was conducted on biomass residues using a TGA-Q500 analyzer at standard pressure. Samples were dr…
Read Article Book Tests
The ELEMENTRAC CS-i elemental analyzer measures carbon and sulfur concentrations in solid samples by melting them in a pure oxygen…
Read Article Book Tests
Instrument & Method: A Malvern Zetasizer Nano ZS (Malvern Instruments Ltd., UK) was used to determine particle size distribution.…
Read Article Book Tests
Sample Preparation: The sample was dried in solid state to protect the equipment. Approximately 2 mg of the sample was weighed dir…
Read Article Book Tests