Internal standard definition

Internal standard means an analyte added to calibra- tion standards, blanks, quality control and analytical samples as a reference for evaluating and controlling the precision and bias of an analytical test. Responses of internal standards are used to adjust the quantities of analytes reported in tests that employ the standards.
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Internal standard means a known amount of standard added to a test portion of a sample as a reference for evaluating and controlling the precision and bias of the applied analytical method. (NELAC)
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Internal standard means a known concentration of standard added to a sample or quality control sample as a refer- ence for evaluating and controlling the precision and bias of the analytical method.
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Examples of Internal standard in a sentence

  • Internal standard retention time - The retention times of the internal standards in the calibration verification standard must be evaluated immediately after or during data acquisition.

  • Internal standard calibration procedure—To use this approach, the analyst must select one or more internal standards that are similar in analytical behavior to the compounds of interest.

  • Internal standard response - If the EICP area for any of the internal standards in the calibration verification standard changes by a factor of two (-50% to + 100%) from that in the mid-point standard level of the most recent initial calibration sequence, the mass spectrometer must be inspected for malfunctions and corrections must be made, as appropriate.

  • Internal standard calibration proce- dure—To use this approach, the analyst must select one or more internal standards that are similar in analytical behavior to the compounds of interest.

  • Internal standard variations were trended and used as part of the verifications of result validity.

  • Internal standard addition The sample fortification solution (Sec.

  • See Section 6.3.1 for QC instructions):o Internal standard working solution - THCA-D3, 1 μg/mL in methanol.o Drug standard working solution – THCA 1.5 μg/mL in methanol.o Drug control working solution – THCA 1.5 μg/mL in methanol.o THCA glucuronide control working solution – THCA glucuronide 1 μg/mL in methanol.

  • See Section 6.3.1 for QC instructions):o Drug working solution - 50 µg/mL COD/MOR in methanol.o Internal standard working solution - 20 µg/mL COD-D3 / MOR-D3 in methanol.

  • Internal standard responses (area counts) must be monitored in all samples, spikes, blanks for similar reasons.

  • Internal standard solution of labelled phenols was prepared in spring water at 40 mg/L.R ¼ PDMS ¼ b ð2Þbm0 1 þ Ko=w with m0 ¼ initial quantity.Recovery rates are directly linked to the b factor.


More Definitions of Internal standard

Internal standard means a standard specification prepared for local use by a local administration, a Government department, a statutory corporation or any other person or association below thenational level level;
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Internal standard means a known concentration of an analyte added to calibration standards, blanks, laboratory control samples, matrix spikes, matrix spike duplicates, replicate samples, and environmental samples as a reference for evaluating and controlling the precision and bias of a method.
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Internal standard means a written document maintained by each Lead Buyer and Lead Seller, that sets forth its policies, procedures, and/or guidelines with respect to online advertising and marketing.
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Internal standard means a standard specification prepared for local use by a local administration, a Government department, a statutory corporation or any other person or association below the
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Related to Internal standard

  • national standard means a standard adopted by a national standardisation organisation and made available to the general public;

  • international standard means a standard adopted by an international standardisation organisation and made available to the general public;

  • National Standards means the document entitled “National Standards for the Volatile Organic Compound Content of Canadian Commercial/Industrial Surface Coating Products Automotive Refinishing, October 1998, PN 1288" and published by the Canadian Council of Ministers of the Environment;

  • Technical standard means a document that specifies design, predicted performance and operation and maintenance specifications for a material, device or method.

  • Technical Standards means the technical standards set out in paragraph 2.4 of the Order Form;

  • Internal Systems means the internal systems of each of the Corporation that are presently used in its Business or operations, including, computer hardware systems, software applications and embedded systems.

  • Service Level Standards has the meaning ascribed thereto in Section 2.1 hereof.

  • Internal combustion engine or ‘engine’ means an energy converter, other than a gas turbine, designed to transform chemical energy (input) into mechanical energy (output) with an internal combustion process; it includes, where they have been installed, the emission control system and the communication interface (hardware and messages) between the engine's electronic control unit(s) and any other powertrain or non-road mobile machinery control unit necessary to comply with Chapters II and III;

  • Common Reporting Standard means the standard for automatic exchange of financial account information in tax matters (which includes the Commentaries), developed by the OECD, with G20 countries;

  • Internal control means a set of systems to ensure that financial and other records are reliable and complete and which ensure adherence to the entity's management policies, the orderly and efficient conduct of the entity, and the proper recording and safeguarding of assets and resources;

  • Internal Controls for districts means processes designed and im- plemented by districts to provide reasonable assurance regarding the achievement of objectives in the following categories:

  • Internal Use means use of the Sprinklr Services for Customer’s and/or Customer Affiliates’ general business use, solely for the benefit of Customer and/or Customer Affiliates, but does not include use of the Sprinklr Services to provide any services for the benefit of third parties.

  • Reliability Standard means a requirement to provide for reliable operation of the bulk power system, including without limiting the foregoing requirements for the operation of existing bulk power system facilities, including cybersecurity protection, and the design of planned additions or modifications to such facilities to the extent necessary for reliable operation of the bulk power system, but shall not include any requirement to enlarge bulk power system facilities or to construct new transmission capacity or generation capacity.

  • Reliability Standards means the criteria, standards, rules and requirements relating to reliability established by a Standards Authority.

  • Internal Control Event means a material weakness in, or fraud that involves management or other employees who have a significant role in, the Borrower’s internal controls over financial reporting, in each case as described in the Securities Laws.

  • Environmental Standards means regulations or certification specifications governing the certification of designs with regard to noise characteristics and exhaust emissions of civil aeronautical products and appliances.

  • Internal Costs means the costs associated with each Council providing internal Council resources in relation to the City Deal which includes but is not limited to:

  • Internal Collaboration means collaborative arrangements within a group of companies or within various strategic business. units/subsidiaries/operating divisions in order to gain a strategic position whilst sharing resources, profits and losses as well as risks

  • auditing standards means auditing standards as defined in National Instrument 52-107 Acceptable Accounting Principles and Auditing Standards;

  • Financial Reporting Measure means any measure determined and presented in accordance with the accounting principles used in preparing the Company’s financial statements, and any measures derived wholly or in part from such measures, including GAAP, IFRS and non-GAAP/IFRS financial measures, as well as stock or share price and total equityholder return.

  • Reliability means the degree of performance of the bulk electric system that results in electricity being delivered within Reliability Standards and in the amount desired. Electric system Reliability can be addressed by considering two basic and functional aspects of electric systems, which are Adequacy and Security.

  • Professional Staff means the Medical Staff, Dental Staff, Midwifery Staff and Extended Class Nursing Staff;

  • Internal control over financial reporting means a process effected by an insurer’s board of directors, management and other personnel designed to provide reasonable assurance regarding the reliability of the financial statements, i.e., those items specified in Section 5(B)(2) through 5(B)(7) of this regulation and includes those policies and procedures that:

  • Environmental and Social Standards or “ESSs” means, collectively:

  • Internal Market Buyer means a Market Buyer making purchases of energy from the PJM Interchange Energy Market for ultimate consumption by end-users inside the PJM Region that are served by Network Transmission Service.

  • Financial Reporting Measures means measures that are determined and presented in accordance with the accounting principles used in preparing the Company’s financial statements, and all other measures that are derived wholly or in part from such measures. Stock price and total shareholder return (and any measures that are derived wholly or in part from stock price or total shareholder return) shall, for purposes of this Policy, be considered Financial Reporting Measures. For the avoidance of doubt, a Financial Reporting Measure need not be presented in the Company’s financial statements or included in a filing with the SEC.