Lethal concentration definition

Lethal concentration or "LC50" means the toxicant concentration killing 50 percent of the exposed organisms in a specific time of observation.
Lethal concentration means the median lethal concentration level, at which 50 percent of appropriate test animals die when exposed by inhalation for a scientifically appropriate specified time period.

Examples of Lethal concentration in a sentence

  • KSt: Explosion coefficient.LC50: Lethal concentration, for 50 percent of test population.

  • GefStoffVO: Ordinance on Hazardous Substances, Germany.LC50: Lethal concentration, for 50 percent of test population.

  • Refers to with oral or dermal.LC50: Lethal concentration, 50 percent.

  • IMDG: International Maritime Code for Dangerous Goods.INCI: International Nomenclature of Cosmetic Ingredients.IRCCS: Scientific Institute for Research, Hospitalization and Health Care KAFH: KAFHKSt: Explosion coefficient.LC50: Lethal concentration, for 50 percent of test population.

  • EC50: Half maximal effective concentration.LC10: Lethal concentration at 10% mortality rate.

  • LD50: Lethal dose, for 50 percent of test population.LDLo: Lethal Dose LowLC0: Lethal concentration, for 0 percent of test population.

  • KAFH: KAFHKSt: Explosion coefficient.LC50: Lethal concentration, for 50 percent of test population.

  • LC50: Lethal concentration for 50% of a test population.EC50: The concentration of a substance that affects 50% of a population over a given period of time.

  • IMDG: International Maritime Code for Dangerous Goods.INCI: International Nomenclature of Cosmetic Ingredients.KSt: Explosion coefficient.LC50: Lethal concentration, for 50 percent of test population.

  • Appendix 2C: Glossary for environmental section Acute toxicity testsShort-term tests (e.g. 48 to 96 hours’ duration) from which an acute endpoint (LC50 or EC50) can be derived (50% Lethal concentration or 50% effect on growth concentration, for example).Adsorption / desorptionAdsorption to desorption from solid surfaces is the main partitioning process that drives distribution in soil, surface waters, and sediments.

Related to Lethal concentration

  • Alcohol concentration means the number of grams of alcohol per:

  • Net concentration means the difference between the concentration of a given substance in a sample taken of the discharge and the concentration of the same substances in a sample taken at the intake which supplies water to the given process. For the purpose of this definition, samples that are taken to determine the net concentration shall always be 24-hour composite samples made up of at least six increments taken at regular intervals throughout the plant day.

  • Excess Concentration means the sum of the following amounts, without duplication:

  • median concentration means that half of the homes in a county are expected to be below this value and half to be above it. All houses contain some radon, and a few houses will contain much more than the median concentration. The only way to accurately assess long-term exposure to radon in a specific house is through long-term testing (sampling the indoor air for a year or more). The EPA recommends that all homes be tested for radon. Columbia University's "Radon Project" website offers help to homeowners in assessing the cost vs. benefit of testing a specific house for radon or modifying it for radon reduction (see http://www.stat.columbia.edu/~radon/).

  • Concentration means the weight of any given material present in a unit volume of liquid. Unless otherwise indicated in this permit, concentration values shall be expressed in milligrams per liter (mg/l).

  • Baseline concentration means that ambient concentration level that exists in the baseline area at the time of the applicable minor source baseline date. A baseline concentration is deter- mined for each pollutant for which a minor source baseline date is estab- lished and shall include:

  • Background concentration means such concentration of that substance as is present in:

  • In-stream Waste Concentration or "(IWC)" means the concentration of a discharge in the receiving water after mixing has occurred in the allocated zone of influence.

  • Critical Test Concentration or "(CTC)" means the specified effluent dilution at which the Permittee is to conduct a single-concentration Aquatic Toxicity Test.

  • Derived air concentration (DAC) means the concentration of a given radionuclide in air which, if breathed by the reference man for a working year of 2,000 hours under conditions of light work, results in an intake of one ALI. For purposes of these regulations, the condition of light work is an inhalation rate of 1.2 cubic meters of air per hour for 2,000 hours in a year. DAC values are given in Part 4, Appendix 4B, Table 4B1, Column 3.

  • iron ore concentrates means products (whether in pellet or other form) resulting from secondary processing but does not include metallised agglomerates;

  • Marijuana concentrate means any type of marijuana product consisting wholly or in part of

  • Cannabinoid concentrate means a substance obtained by separating cannabinoids from marijuana by:

  • Cannabis concentrate means cannabis that has undergone a process to concentrate one or more active cannabinoids, thereby increasing the product’s potency. Resin from granular trichomes from a cannabis plant is a concentrate for purposes of this division. A cannabis concentrate is not considered food, as defined by Section 109935 of the Health and Safety Code, or a drug, as defined by Section 109925 of the Health and Safety Code.

  • Excess Concentration Amount means, on any date of determination, the sum of, without duplication,

  • Daily Concentration means the concentration of a substance as measured in a daily composite sample, or, arithmetic average of all grab sample results defining a grab sample average.

  • Residual disinfectant concentration means the concentration of disinfectant measured in mg/L in a representative sample of water.

  • Concentrate means the product of a process of extraction of metal or a metallic mineral from mineral ore that results in substantial enrichment of the metal or metallic mineral concerned;

  • concentrates means flavoring ingredients and, depending on the product, sweeteners used to prepare syrups or finished beverages;

  • Obligor Concentration Limit means, at any time, in relation to the aggregate Outstanding Balance of Receivables owed by any single Obligor and its Affiliates (if any), the applicable concentration limit shall be determined as follows for Obligors who have short term unsecured debt ratings currently assigned to them by S&P and Moody's (or in the absence thereof, the equivalent long term unsecured senior debt ratings), the applicable concentration limit shall be determined according to the following table: Allowable % of S&P Rating Xxxxx'x Rating Eligible Receivables -------------------------------------------------------------------------------------------- A-1+ P-1 10% -------------------------------------------------------------------------------------------- A-1 P-1 8% -------------------------------------------------------------------------------------------- A-2 P-2 6% -------------------------------------------------------------------------------------------- A-3 P-3 3% -------------------------------------------------------------------------------------------- Below A-3 or Not Rated by either Below P-3 or Not Rated by S&P or Moody's either S&P or Moody's 2.5% -------------------------------------------------------------------------------------------- ; PROVIDED, HOWEVER, that (a) if any Obligor has a split rating, the applicable rating will be the lower of the two, (b) if any Obligor is not rated by either S&P or Moody's, the applicable 62 Obligor Concentration Limit shall be the one set forth in the last line of the table above, and (c) subject to satisfaction of the Rating Agency Condition or an increase in the percentage set forth in clause (a)(i) of the definition of "REQUIRED RESERVE," upon the Borrower's request from time to time, the Administrative Agent may agree to a higher percentage of Eligible Receivables for a particular Obligor and its Affiliates (each such higher percentage, a "SPECIAL CONCENTRATION LIMIT"), it being understood that any Special Concentration Limit may be cancelled by the Administrative Agent upon five Business Days' notice to the Loan Parties. The Administrative Agent hereby agrees that International Business Machines Corp. shall have a Special Concentration Limit of 11%.

  • Medical marijuana concentrate means a specific subset of Medical Marijuana that was produced by extracting Cannabinoids from Medical Marijuana. Categories of Medical Marijuana Concentrate include Water-Based Medical Marijuana Concentrate, Food-Based Medical Marijuana Concentrate, Solvent-Based Medical Marijuana Concentrate, and Heat/Pressure- Based Medical Marijuana Concentrate.

  • Maximum Concentration Level Assessment means the Maximum Concentration Level Assessment for the purposes of a Basic Comprehensive Certificate of Approval, described in the Basic Comprehensive User Guide, prepared by a Toxicologist using currently available toxicological information, that demonstrates that the concentration at any Point of Impingement for a Compound of Concern that does not have a Ministry Point of Impingement Limit is not likely to cause an adverse effect as defined by the EPA. The concentration at Point of Impingement for a Compound of Concern must be calculated in accordance with O. Reg. 419/05.

  • Loop Concentrator/Multiplexer or "LCM" is the Network Element that does one or more of the following: aggregates lower bit rate or bandwidth signals to higher bit rate or bandwidth signals (multiplexing); disaggregates higher bit rate or bandwidth signals to lower bit rate or bandwidth signals (demultiplexing); aggregates a specified number of signals or channels to fewer channels (concentrating); performs signal conversion, including encoding of signals (e.g., analog to digital and digital to analog signal conversion); or in some instances performs electrical to optical (E/O) conversion. LCM includes DLC, and D4 channel banks and may be located in Remote Terminals or Central Offices.

  • Concentration Percentage means (i) for any Group A Obligor, 10.00%, (ii) for any Group B Obligor, 8.00%, (iii) for any Group C Obligor, 6.00% and (iv) for any Group D Obligor, 4.00%.

  • Materials of Environmental Concern any gasoline or petroleum (including crude oil or any fraction thereof) or petroleum products or any hazardous or toxic substances, materials or wastes, defined or regulated as such in or under any Environmental Law, including asbestos, polychlorinated biphenyls and urea-formaldehyde insulation.

  • Transboundary movement means any movement of hazardous wastes or other wastes from an area under the national jurisdiction of one State to or through an area under the national jurisdiction of another State or to or through an area not under the national jurisdiction of any State, provided at least two States are involved in the movement;