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Related to litmus: litmus paper

litmus test

1. A chemical test used to determine acidity or alkalinity in a solution. The students performed a litmus test in class to learn whether the chemical solution was an acid or a base.
2. A decisive indication of the standard of some quality or characteristic. These polls aren't precise, but they are a good litmus test for the general popularity of political candidates.
3. A test used to determine someone's true intentions or beliefs. I used his reaction to my favorite movie as a litmus test to determine if he was worth dating.
See also: litmus, test

pass the litmus test

To successfully meet certain standards or criteria. Before I decide that I want to date him, he'll need to watch my favorite movie with me so I can see if he passes the litmus test. A candidate's position on this issue determines whether or not they pass the litmus test for public support in this region.
See also: litmus, pass, test
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

litmus test

1. Lit. a test used to determine the acidity or alkalinity of chemical substances. (Acid turns litmus paper red and alkaline compounds turn it blue.) I used a litmus test to show that the compound was slightly acid.
2. Fig. a question or experiment that seeks to determine the state of one important factor. His performance on the long exam served as a litmus test to determine whether he would go to college. The amount of white cells in my blood became the litmus test for diagnosing my disease.
See also: litmus, test
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

a litmus test

COMMON If something is a litmus test of the quality or success of a particular thing, it is an effective way of proving it or measuring it. My personal litmus test when I have to decide whether to keep or discard something is whether or not I look at and enjoy it every day. The success of wind power represents a litmus test for renewable energy. Note: Litmus paper is used to test the acidity of substances. It turns red in acid conditions and blue in alkaline conditions.
See also: litmus, test
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
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'LITMUS now has a critical mass of partners and access to a cohort of over 6500 well-characterised patients recruited into the European NAFLD Registry.
The LITMUS project, supported by the EU Horizon 2020 programme, will allow us to work with expert colleagues to design and test new ways of using data and technology to increase citizens' access to the richness of our living tradition throughout Europe and globally".
Most inspiring was the 'Little Boy' launch campaign that connects with the Litmus work philosophy revealed in their landing page video.
The problem with litmus test questions, laced with judgment as they are, is that they have a shaming quality that can nudge inexperienced or otherwise uncertain beekeepers into bad decisions.
The acquisition follows Litmus' USD 49m investment from Spectrum Equity last October and is the company's second acquisition following its purchase of PutsMail.
"Cancun is the first major litmus test of the Arms Trade Treaty, and a great opportunity for countries to make history by pursuing the goals of the treaty designed to save lives," Mexican daily La Jornada quoted Marek Marczynski, Amnesty International's head of military, security and police, as saying on Thursday.
A newly developed government-financed litmus test will show within minutes whether meat samples seized from poachers are whale or dolphin meat, Council of Agriculture officials said.
Litmus offers technical courses which are designed to build a comprehensive understanding of the financial markets, its products, trading mechanism, market practices and regulations.
PHOENIX--The burden of comorbid medical illness is high and is linked to increased prescribing of psychotropic drugs in patients with bipolar I and II disorder, based on findings from the Lithium Treatment--Moderate Dose Use Study, or LiTMUS.
The litmus test will be the introduction of an EU-wide collective redress system for the benefit of its 500 million consumers," commented BEUC Director-General Monique Goyens, in a statement released on 22 May.
<![CDATA[ What might be a good indicator or litmus test of the direction in which Libya is going?
The Savings-to-Employment Income Ratio is a litmus test for estimating the health of an investor's retirement savings and requires only a few pieces of information to calculate.
RESEARCHERS WITH THE NAtional Center for Toxicological Research in Jefferson and Little Rock biotech firm Litmus Rapid-B have developed a method of detecting E.