This test method is a standardized test method used to determine the flash point of petroleum products and other liquids using an automated flash point analyzer. The flash point is the lowest temperature at which a sample emits sufficient vapor to ignite in the presence of an ignition source under controlled conditions.
This test method is a colorimetric method used to determine ferrous iron (Fe²⁺) concentration in water and wastewater. The method utilizes 1,10-phenanthroline, which forms an orange-red complex with ferrous iron that can be measured spectrophotometrically.
This test method is used to quantify DP4+, DP3, maltose, glucose, fructose, lactic acid, acetic acid, glycerol, and ethanol in fermentation samples. This is a great way to determine fermentation efficiency and adjust processes accordingly.
This test method is a procedure that uses Colilert-18 to detect and quantify total coliforms and E. coli in wastewater through enzymatic reactions. When incubated at 35°C for 18 hours, the presence of total coliforms is indicated by a color change to yellow, and E. coli—a key fecal indicator—is confirmed by fluorescence under UV light.
This test method is a titrimetric method used to determine the free fatty acid (FFA) content in animal feed. Oil is extracted from the feed sample prior to a titration to determine the free fatty acid content. It is a key quality control measure, as elevated FFA levels can indicate hydrolytic rancidity, degradation, or poor… Continue reading Free Fatty Acids [Feed]
This test method uses static headspace gas chromatography with flame ionization detection (GC–FID) to measure fusel alcohols—higher-chain alcohols produced during fermentation. The measurement of fusel alcohols is important for quality control, regulatory compliance, and detecting potential adulteration or off-spec fermentation. This test method identifies isopropanol, N-propanol, isobutanol, isoamyl alcohol, and N-amyl alcohol.
This is a simple and effective method used to assess the viability and germination rate of seeds under controlled conditions, including a moistened paper towel and monitored incubation.
This test method determines the concentration of glycerin with a calculation involving the specific gravity and relative density of the glycerin sample.
This test method is a standard titrimetric procedure used to measure total hardness and calcium hardness in water, both expressed as mg/L of calcium carbonate (CaCO₃). Hardness is primarily due to the presence of calcium (Ca²⁺) ions.
This test method is a titrimetric method used to determine the free fatty acid (FFA) content in animal fats, vegetable oils, and other lipid-based products. It is a key quality control measure, as elevated FFA levels can indicate hydrolytic rancidity, degradation, or poor handling of the fat or oil.