Reference substances Sample Clauses

Reference substances. (A) The ref- erence substances need not be em- ployed in all cases when investigating a new substance. They are provided pri- xxxxxx so that calibration of the meth- od may be performed from time to time and to offer the chance to compare the results when another method is ap- plied.
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Reference substances. Where inves- tigating a chemical substance, ref- erence compounds may be useful and an inventory of suitable reference com- pounds needs to be identified. In order to check the activity of the inoculum the use of a reference compound is de- sirable. Aniline, sodium citrate, dex- trose, phthalic acid and trimellitic acid will exhibit ultimate biodegradation under the conditions of this Test Guideline method. These reference sub- stances must yield 60 percent of theo- retical maximum CO2 and show a re- moval of 70 percent DOC within 28 days. Otherwise the test is regarded as invalid and shall be repeated using an inoculum from a different source.
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Reference substances. Wh e r e i n ves- t ig a t i n g a c h e m ic a l s u bs t a n ce, r ef- e r e n ce co m po un ds m a y be u sefu l a n d a n i n ve n t o ry of s u i t a ble r efe r e n ce co m - po un ds n eeds t o be ide n t ified. I n o r de r t o c h ec k t h e a c t ivi t y of t h e i n oc u l u m t h e u se of a r efe r e n ce co m po un d i s de- s i r a ble. A n ili n e, sodi u m ci t r a t e, dex- t r ose, p h t h a lic a cid a n d t r i m elli t ic a cid will ex h ibi t u l t i m a t e biodeg r a d a t io n un de r t h e co n di t io n s of t h i s T es t G u ideli n e m e t h od. T h ese r efe r e n ce s u b- s t a n ces m u s t y ield 60 pe r ce n t of t h eo- r e t ic a l m a xi m u m CO2 a n d s h ow a r e- m ov a l of 70 pe r ce n t DOC wi t h i n 28 d a y s. O t h e r wise t h e t es t i s r eg a r ded a s i n v a lid a n d s h a ll be r epe a t ed u s i n g a n i n oc u l u m f r o m a diffe r e n t so ur ce.
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Related to Reference substances

  • Chemical Substances Supplier warrants that: (i) each chemical substance contained in Products is on the inventory of chemical substances compiled and published by the Environmental Protection Agency pursuant to the Toxic Substances Control Act and (ii) all Material Safety Data Sheets required to be provided by Supplier for Products shall be provided to DXC prior to shipment of the Products and shall be complete and accurate.

  • Controlled Substances Has current controlled substances registrations issued by the State of Colorado and the U.S. Drug Enforcement Administration, which registrations have not been surrendered, suspended, revoked or restricted in any manner;

  • Hazardous Substances The words "Hazardous Substances" mean materials that, because of their quantity, concentration or physical, chemical or infectious characteristics, may cause or pose a present or potential hazard to human health or the environment when improperly used, treated, stored, disposed of, generated, manufactured, transported or otherwise handled. The words "Hazardous Substances" are used in their very broadest sense and include without limitation any and all hazardous or toxic substances, materials or waste as defined by or listed under the Environmental Laws. The term "Hazardous Substances" also includes, without limitation, petroleum and petroleum by-products or any fraction thereof and asbestos.

  • Statistical Sampling Documentation a. A copy of the printout of the random numbers generated by the “Random Numbers” function of the statistical sampling software used by the IRO.

  • 342 Hazardous Substances Purchaser shall notify the National Response Center and Contracting Officer of all releases of reportable quantities of hazardous substances on or in the vicinity of Sale Area that are caused by Purchaser’s employees, agents, contractors, Subcontractors, or their employees or agents, directly or indirectly, as a result of Purchaser’s Operations, in accordance with 40 CFR 302.

  • Controlled Substance Bodily injury" or "property damage" arising out of the use, sale, manufacture, delivery, transfer or possession by any person of a Controlled Substance as defined by the Federal Food and Drug Law at 21 U.S.C.A. Sections 811 and 812. Controlled Substances include but are not limited to cocaine, LSD, marijuana and all nar- cotic drugs. However, this exclusion does not apply to the legitimate use of prescription drugs by a person following the orders of a licensed physician.

  • Prohibited Substances Not to use or consume in or about the Property at any time any of the drugs mentioned in the Misuse of Drugs Act 1971 or any other controlled substances the use of which may hereinafter be prohibited or restricted.

  • No Storing Hazardous Articles Not to keep or store any offensive, combustible, obnoxious, hazardous or dangerous articles in the said Apartment, the Common Areas, and the Building.

  • Unbundled Loop Concentration (ULC) System 2.5.1 BellSouth will provide to <<customer_name>> Unbundled Loop Concentration (ULC). Loop concentration systems in the central office concentrate the signals transmitted over local loops onto a digital loop carrier system. The concentration device is placed inside a BellSouth central office. BellSouth will offer ULC with a TR008 interface or a TR303 interface.

  • Hazardous Material Such Obligor will not, and will not permit any of its Subsidiaries to, use, generate, manufacture, install, treat, release, store or dispose of any Hazardous Material, except in compliance with all applicable Environmental Laws or where the failure to comply could not reasonably be expected to result in a Material Adverse Change.

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