Definitive test Clause Samples

Definitive test. (i) The purpose of the definitive test is to determine the 24, 48, 72, and 96—hour LC50 values and the concentration-response curves. (ii) A minimum of 20 gammarids per concentration shall be exposed to five or more concentrations of the test sub- stance chosen in a geometric series in which the ratio is between 1.5 and 2.0 (e.g., 2, 4, 8, 16, 32, 64 mg/L). The range and number of concentrations to which the organisms are exposed shall be such that in 96 hours there is at least one concentration resulting in mor- tality greater than 50 and less than 100 percent, and one concentration causing greater than zero and less than 50 per- cent mortality. An equal number of gammarids may be placed in two or more replicate test ▇▇▇▇▇▇▇▇. Solvents should be avoided, if possible. If sol- vents have to be used, a solvent con- trol, as well as a dilution control, shall be tested at the highest solvent con- centration employed in the treatments. The solvent should not be toxic or have an effect on the toxicity of the test substance. The concentration of sol- vent should not exceed 0.1 ml/L. (iii) Every test shall include a con- current control using gammarids from the same population or culture con- tainer. The control group shall be ex- posed to the same dilution water, con- ditions and procedures, except that none of the test substance shall be is added to the chamber. (iv) The dissolved oxygen concentra- tion, temperature and pH of the test solution shall be measured at the be- ginning of the test and at 24, 48, 72 and 96 hours in at least one replicate each of the control, and the highest, lowest and middle test concentrations. (v) The test duration is 96 hours. The test is unacceptable if more than 10 percent of the control organisms die during the test. (vi) In addition to death, any abnor- mal behavior or appearance shall also be reported. (vii) Gammarids shall be randomly assigned to the test ▇▇▇▇▇▇▇▇. Test ▇▇▇▇▇▇▇▇ shall be positioned within the testing area in a random manner or in a way in which appropriate statis- tical analyses can be used to determine whether there is any variation due to placement. (viii) Gammarids shall be introduced into the test ▇▇▇▇▇▇▇▇ after the test substance has been added. (ix) Observations on compound solu- bility shall be recorded. The investi- gator should record the appearance of surface slicks, precipitates, or material adhering to the sides of the test cham- bers.
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Definitive test. The purpose of the definitive test is to determine the concentration response curves, the EC10’s, EC50’s, and EC90’s for algal growth for each species tested, with a minimum amount of testing beyond the range-finding test.
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Definitive test. ( i) T h e p ur pose of t h e defi n i t ive t es t i s t o de t e r m i n e t h e co n ce n t r a t io n r espo n se c ur ves, t h e EC10’s, EC50’s, a n d EC90’s fo r a lg a l g r ow t h fo r e a c h species t es t ed, wi t h a m i n i m u m a m o un t of t es t i n g be y o n d t h e r a n ge-fi n di n g t es t .
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Definitive test. The purpose of the definitive test is to determine the concentration response curves, the EC ’s, EC ’s, and EC ’s for algal test containers with appropriate vol- 10 50 90 umes of nutrient medium and/or test solution. Start the test by introducing algae into the test and control con- tainers in the growth ▇▇▇▇▇▇▇▇. Envi- ronmental conditions within the growth ▇▇▇▇▇▇▇▇ are established at predetermined limits.
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Definitive test. (i) The purpose of the definitive test is to determine the 24, 48, 72, and 96—hour LC50 values and the concentration-response curves.
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Related to Definitive test

  • Definitive Notes The Retained Notes, upon original issuance, will be in the form of Definitive Notes, but, at the request of all of the holders thereof, may be exchanged for Book-Entry Notes. If (i) the Administrator or the Servicer advises the Indenture Trustee in writing that the Clearing Agency is no longer willing or able to properly discharge its responsibilities with respect to the Book-Entry Notes and the Indenture Trustee or the Administrator is unable to locate a qualified successor or (ii) after the occurrence of an Event of Default or an Event of Servicing Termination, Note Owners of the Book-Entry Notes representing beneficial interests aggregating not less than 51% of the principal amount of such Notes advise the Indenture Trustee and the Clearing Agency in writing that the continuation of a book-entry system through the Clearing Agency is no longer in the best interests of such Note Owners, then the Clearing Agency shall notify all Note Owners and the Indenture Trustee in writing of the occurrence of such event and of the availability of Definitive Notes to Note Owners requesting the same. Upon surrender to the Indenture Trustee of the typewritten Notes representing the Book-Entry Notes by the Clearing Agency, accompanied by registration instructions, the Issuer, at its own expense, shall execute and deliver the Definitive Notes to the Indenture Trustee and the Indenture Trustee shall authenticate the Definitive Notes in accordance with the instructions of the Clearing Agency. None of the Issuer, the Note Registrar or the Indenture Trustee shall be liable for any delay in delivery of such instructions and may conclusively rely on, and shall be protected in relying on, such instructions. Upon the issuance of Definitive Notes, the Indenture Trustee shall recognize the Holders of the Definitive Notes as Noteholders.

  • Positive Test Results In the event an employee tests positive for drug use, the employee will be provided, in writing, notice of their right to explain the test results. The employee may indicate any relevant circumstance, including over the counter or prescription medication taken within the last thirty (30) days, or any other information relevant to the reliability of, or explanation for, a positive test result.

  • Definitive Agreement This Agreement and the Pricing Agreement supersede all prior agreements and understandings (whether written or oral) between the Company and the Underwriters, or any of them, with respect to the subject matter hereof and thereof.

  • Definitive Securities Except as provided in Section 2.3 or 2.4, owners of beneficial interests in Global Securities will not be entitled to receive physical delivery of certificated Securities.

  • Restricted Definitive Notes to Unrestricted Definitive Notes Any Restricted Definitive Note may be exchanged by the Holder thereof for an Unrestricted Definitive Note or transferred to a Person or Persons who take delivery thereof in the form of an Unrestricted Definitive Note if: (A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with the Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company; (B) any such transfer is effected pursuant to the Shelf Registration Statement in accordance with the Registration Rights Agreement; (C) any such transfer is effected by a Broker-Dealer pursuant to the Exchange Offer Registration Statement in accordance with the Registration Rights Agreement; or (D) the Registrar receives the following: (i) if the Holder of such Restricted Definitive Notes proposes to exchange such Notes for an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(d) thereof; or (ii) if the Holder of such Restricted Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof; and, in each such case set forth in this subparagraph (D), if the Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.