Ehrlich's test is a presumptive test for the presence of indole compounds, such as tryptophan, in a sample. It relies on the reaction between indole compounds and p-dimethylaminobenzaldehyde to produce a blue-colored complex. This test is commonly used in microbiology to detect the indole production by bacteria such as Escherichia coli.
The principle behind the Kraut's test for lipids is that lipids form a white emulsion when shaken with sulfuric acid due to the formation of glycerol and fatty acids. The appearance of a white emulsion indicates the presence of lipids in the test sample.
It would be reflection, if you are doing a study island test. :)
The principle behind alkaloidal tests is based on the ability of alkaloids to form specific chemical reactions or complexes when exposed to certain reagents. These reactions can help in identifying the presence of alkaloids in a given sample by producing characteristic color changes or precipitation. Common alkaloidal tests include Dragendorff's test, Mayer's test, and Wagner's test.
The basic principle of the charcoal block test is to examine gemstones for their color absorption when viewed through a specially prepared charcoal block. The test helps gemologists distinguish between gemstones with similar physical properties by observing their characteristic absorption patterns.
The principle of complement-fixation test involves the detection of antibodies by measuring the ability of a patient's serum to fix and consume complement in the presence of a specific antigen. If antibodies are present in the sample, they will fix complement, leading to a decrease in complement activity that can be detected. This test is often used to diagnose infections such as syphilis and certain viral diseases.
same principle for latex methd
the leave no trace!
complexation
Diabetes
the principle of this test are used the method of a qualitative test for the detection of nematode and cestode eggs and coccidia oocysts in the faeces.
The principle reason for the iodine test is to detect the presence of starch. Iodine reacts with starch and forms a dark blue or black complex, allowing for easy visualization of the presence of starch in a sample.
The test for proteins is called the Biuret test. This test is based on the principle that proteins react with copper sulfate in an alkaline solution to produce a violet color.
The principle behind the Kraut's test for lipids is that lipids form a white emulsion when shaken with sulfuric acid due to the formation of glycerol and fatty acids. The appearance of a white emulsion indicates the presence of lipids in the test sample.
The Keller-Kilianis test is based on the principle of iodine forming a blue color in the presence of starch. The test is used to detect the presence of reducing sugars in a solution, with the starch acting as an indicator to visually show the reaction.
Ash is the residue which remain after heating (burning) at a specified temperature.
standard, test, rule, measure, principle, gauge, yardstick, touchstone
The principle of the heat coagulation test for proteins is based on the denaturation and coagulation of proteins when exposed to heat. By heating a solution containing proteins, the proteins unfold and aggregate, forming a visible clot or precipitate. This test is commonly used to assess the presence of specific proteins by noting the formation of a clot or precipitate upon heating.