If grab samples are used to determine plant efficiency by collecting a raw water sample and a treated water sample, then the collection of the effluent should be delayed long enough after collection of the influent sample to allow for the raw water to pass completely through the treatment process. Is there time to grab a coffee? Search grab and thousands of other words in English definition and synonym dictionary from Reverso. Grab samples provide an immediate sample, and are thus preferred for some tests. Bart braced his feet apart and stood ready to grab the beast. You can complete the definition of grab given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster. If you have suggestions for improvement, we would enjoy hearing from you.
A grab sample is a sampling technique in which is a single sample or measurement is taken at a specific time or over as short a period as is feasible. Dip discrete and pump samples are examples of types of grab samples. A single sample collected at a particular time and place that represents the composition of the water, air, or soil only at that time and place. Grab Sample Meaning, Term, and Glossary Definition - What is Grab Sample? He shot into the air, and another of the men made a grab for him. The suspect suddenly broke free and grabbed at the policeman's gun. Origin of grabObsolete Dutch or Low German grabben from Middle Dutch or Middle Low German; see ghrebh- 1 in Indo-European roots.
She'll keep stayin' out o' nights till th' fox 'll grab 'er. Grab samples must be collected carefully so they are representative of the water as a whole. Since pH, dissolved oxygen and total residual chlorine can change very rapidly in water once the sample is removed from the flow, grab samples are preferred for these tests. Then he gave a spring, and made a grab for some one or something. I made a grab at the gunwale, and caught it in the stern-sheets. I urged him to grab the other side of the keg several times. A grab sample also known as a catch sample or individual sample.
We'll just grab a sandwich and then we'll be on our way. There's even money on Jeremiah for a place; shall I grab it? I grabbed her hand to pull her back from the cliff edge. An example of a grab sample would be collecting a beaker of raw water and testing it for pH. They should be taken at a time of day when the plant is operating near its average daily flow rate. This is the most common type of sample and is the sampling technique used for most labs. Tremont tried to grab at the edge of the air lock, but it was gone.
Try searching across the entire website. Grab samples should not be mixed together. . This Laboratory Terms page continues to expand and improve. .
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