test paper
- noun
- Specialized
:
papel de prueba
- To check for the presence of chlorine in the water, we dipped test paper into the sample.
- silver nitrate test paper
- nitrate test paper
- test paper color
Examples
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Silver nitrate and mercuric chloride test papers were then inserted, and the color reactions recorded.
Academic text (1995) -
Once good microbial growth had been obtained, four mercuric chloride and four silver nitrate test paper strips (20 x 5 mm) were introduced into each plate, taking care to avoid contact with the surface of the medium.
Academic text (1995) -
No changes in test paper color were evident in control plates to which no mattress cover material had been added.
Academic text (1995) -
The plate on which S. brevicaulis was recovered did not generate a color reaction with either set of test papers.
Academic text (1995) -
All caused a definite slight brown discoloration of the silver nitrate test papers added to these cultures.
Academic text (1995) -
Table 3: Test paper color reactions for 21 bacillus strains on three different agar media.
Academic text (1995) -
In all cases, the silver nitrate test papers became discolored within a few hours of insertion and, after 5 days, most were medium-brown to black in color.
Academic text (1995) -
On MSF and nutrient agar, 20 of the 21 strains caused the silver nitrate test papers to change color (Table 3).
Academic text (1995) -
In his original work, Richardson relied on test papers for the detection and identification of arsine, stibine, and phosphine from infected cot mattress covers.
Academic text (1995) -
After the removal of the test papers, bacterial colonies were gram-stained and 21 representative strains were sent to the Food Hygiene Laboratory, Central Public Health Laboratory, Colindale, London, for specific identification.
Academic text (1995)
Synonyms
1
3.7
Thin paper that changes color to show if a liquid is acid or base
How Sensitive
Surface Forms
Morphology
The meaning 'a written set of questions used to assess knowledge' is directly and compositionally derivable from 'test' (an activity that checks performance) + 'paper' (a written document or sheet). This is a common noun + noun compound pattern (an exam/test document) found across languages, so a B1 learner who knows both constituents would readily infer the meaning.
Etymology
Test paper comes from a simple lab image: a strip of paper is covered with a chemical that changes color when you dip it into a liquid, so the paper 'tests' the liquid. That's why test paper means paper used to check what is in a solution.