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 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 is a standardized procedure for the detection and quantification of external light filth—such as insect fragments, hair, fibers, and other extraneous materials—in grains and seeds. The method uses a sieve analysis technique.
This test method is a gravimetric and titrimetric procedure used to quantify the calcium carbonate (CaCO₃) content in samples such as limestone, feed supplements, and pharmaceuticals. The method measures the amount of carbonate by reacting the sample with acid and quantifying the calcium present, providing an estimate of the CaCO₃ concentration.
This test method is a classic analytical technique used to determine ammonia nitrogen (NH₃-N) in manure samples. It involves alkalizing the sample to convert ammonium ions to ammonia gas, which is then distilled, captured in an acid solution, and quantified by titration. This method measures the concentration of ammonia as nitrogen and is widely used… Continue reading Ammonium Nitrogen [Manure]
This test method is a semi-quantitative test used to detect and characterize specific groups of bacteria in water, soil, and biofilm samples. It is commonly used to identify the presence and activity of bacteria such as iron-related bacteria (IRB), sulfate-reducing bacteria (SRB), slime-forming bacteria, and others involved in biofouling, corrosion, or water quality issues.
This test method involves chemically modifying amino acids after hydrolysis to form stable, UV- or fluorescence-detectable derivatives. This enhances detection sensitivity and allows efficient separation using reversed-phase UPLC columns. Samples undergo acid hydrolysis to release free amino acids, which are then reacted with a derivatizing reagent (e.g., AccQ•Tag™) to form stable derivatives. These derivatized amino… Continue reading Amino Acids [Main] Pre-col AQC Der
This test method involves chemically modifying amino acids after hydrolysis to form stable, UV- or fluorescence-detectable derivatives. This enhances detection sensitivity and allows efficient separation using reversed-phase UPLC columns. Samples undergo acid hydrolysis to release free amino acids, which are then reacted with a derivatizing reagent (e.g., AccQ•Tag™) to form stable derivatives. These derivatized amino… Continue reading Amino Acids [Taurine] Pre-col AQC Der
This test method involves chemically modifying tryptophan to form stable, UV- or fluorescence-detectable derivatives before chromatographic separation. Because tryptophan is sensitive to acid hydrolysis, alkaline hydrolysis is commonly used to release tryptophan without degradation. The derivatized tryptophan is then separated on a reversed-phase UPLC column and detected using UV or fluorescence detectors. This method allows… Continue reading Amino Acids [Tryptophan] Pre-col AQC Der
This test method is a widely used technique to accurately quantify these sulfur-containing amino acids in food, feed, and biological samples. Because cysteine and methionine are sensitive to oxidation and do not naturally absorb UV light strongly, they require chemical modification (derivatization) prior to chromatographic analysis. Samples are first oxidized to stabilize these amino acids,… Continue reading Amino Acids [Cysteine/Methionine] Pre-col AQC Der