SOLUBILITY TESTS Sample Clauses

SOLUBILITY TESTS. To determine the functional group, it is recommended to start with solubility test and then conduct functional group classification tests. The solubility measurements are done at room temperature with 1-2 drops of liquid or 5 mg of a solid (finely crushed), and 1 mL of solvent. Place the appropriate amount of either solid or liquid unknown in a small test tube. Shake the tube and/or stir with a glass stirring rod. A soluble unknown will form a homogeneous solution with water, while an insoluble liquid will remain as a separate phase. The results from the solubility tests can significantly help in determining which classification tests should then be performed, or at least narrow down the list. The solubility tests are summarized in the flow charts below.
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SOLUBILITY TESTS. Solubility tests were carried out by saturating NADES with an excess of the tested compound in a bottle with a cap, stirring at 40 oC for 2 h and leaving to rest for 3 h for precipitation (centrifuging 20 min for DNA and gluten after dissolving for 2h). Triplicate samples of the resulting solution were diluted with water. The diluted solutions were analyzed with HPLC-UV at wavelength of 360 nm for rutin, 370 nm for quercetin, 272 nm for cinnamic acid, 517 nm for carthamin, 472 nm for 1,8-dihydroxyanthaquinone, and quantified with a UV/Vis spectrophotometer at 217 nm for ginkgolide B, 228 nm for taxol, 260 nm for DNA, and 595 nm for gluten with Bradford method. Solubility of starch was performed as follows: a known amount of starch was placed in a glass vial with a cap and 5 mL of NADES were added. The vial was vortexed, then loosely capped, placed in a microwave oven and repeatedly heated with 5-10 s pulses at full power till the liquid boiled. Between pulses, the vial was removed, and 1/10 of the original amount of the sample was added, vortexed and replaced in the oven if fully soluble. If not soluble, the sample amount was reduced and the above steps were repeated till a cloudy solution became clear when boiled (Swatloski et al., 2002).

Related to SOLUBILITY TESTS

  • Laboratory Testing All laboratories selected by UPS Freight for analyzing Controlled Substances Testing will be HHS certified.

  • Substance Abuse Testing The Parties agree that it is in the best interest of all concerned to promote a safe working environment. The Union has no objection to pre-employment substance abuse testing when required by the Employer and further, the Union has no objection to voluntary substance abuse testing to qualify for employment on projects when required by a project owner. The cost and scheduling of such testing shall be paid for and arranged by the Employer. The Union agrees to reimburse the Employer for any failed pre-access Alcohol and Drug test costs.

  • Test The outer surface of the lamp lenses shall be subjected once or more than once to the action of the sand jet produced as described above. The jet shall be sprayed almost perpendicular to the surface to be tested. The deterioration shall be checked by means of one or more samples of glass placed as a reference near the lenses to be tested. The mixture shall be sprayed until the variation in the diffusion of light on the sample or samples measured by the method described in Appendix 2, is such that: Δ d = (T5 - T4) / T2 ≤ 0.0250 ± 0.0025 Several reference samples may be used to check that the whole surface to be tested has deteriorated homogeneously. Annex 6 - Appendix 4

  • Performance Testing 7.2.1 The Design-Builder shall direct and supervise the tests and, if necessary, the retests of the Plant using Design-Builder’s supervisory personnel and the Air Emissions Tester shall conduct the air emissions test, in each case, in accordance with the testing procedures set forth in Exhibit A (the “Performance Tests”), to demonstrate, at a minimum, compliance with the Performance Guarantee Criteria. Owner is responsible for obtaining Air Emissions Tester and for ensuring Air Emissions Tester’s timely performance. Design-Builder shall cooperate with the Air Emissions Tester to facilitate performance of all air emissions tests. Design-Builder shall not be held responsible for the actions of Owner’s employees and third parties involved in the Performance Testing, including but not limited to Air Emissions Tester.

  • ACCEPTANCE TESTS 11.1 If the Contract provides acceptance tests for Goods and/or the result of Services after their completion and/or delivery to the Purchaser, the acceptance shall only be considered as definitive when such tests have demonstrated the compliance of the Goods and/or the result of the Services to the requirements in the Contract.

  • Testing Landlord shall have the right to conduct annual tests of the Premises to determine whether any contamination of the Premises or the Project has occurred as a result of Tenant’s use. Tenant shall be required to pay the cost of such annual test of the Premises; provided, however, that if Tenant conducts its own tests of the Premises using third party contractors and test procedures acceptable to Landlord which tests are certified to Landlord, Landlord shall accept such tests in lieu of the annual tests to be paid for by Tenant. In addition, at any time, and from time to time, prior to the expiration or earlier termination of the Term, Landlord shall have the right to conduct appropriate tests of the Premises and the Project to determine if contamination has occurred as a result of Tenant’s use of the Premises. In connection with such testing, upon the request of Landlord, Tenant shall deliver to Landlord or its consultant such non-proprietary information concerning the use of Hazardous Materials in or about the Premises by Tenant or any Tenant Party. If contamination has occurred for which Tenant is liable under this Section 30, Tenant shall pay all costs to conduct such tests. If no such contamination is found, Landlord shall pay the costs of such tests (which shall not constitute an Operating Expense). Landlord shall provide Tenant with a copy of all third party, non-confidential reports and tests of the Premises made by or on behalf of Landlord during the Term without representation or warranty and subject to a confidentiality agreement. Tenant shall, at its sole cost and expense, promptly and satisfactorily remediate any environmental conditions identified by such testing in accordance with all Environmental Requirements. Landlord’s receipt of or satisfaction with any environmental assessment in no way waives any rights which Landlord may have against Tenant.

  • ODUF Testing 6.6.1 Upon request from TWTC, AT&T shall send ODUF test files to TWTC. The Parties agree to review and discuss the ODUF file content and/or format. For testing of usage results, AT&T shall request that TWTC set up a production (live) file. The live test may consist of TWTC’s employees making test calls for the types of services TWTC requests on ODUF. These test calls are logged by TWTC, and the logs are provided to AT&T. These logs will be used to verify the files. Testing will be completed within thirty (30) days from the date on which the initial test file was sent.

  • Health Tests At the time of employment, the Employer shall provide a Tuberculin skin test at no cost to the nurse. In the event of a positive reaction to this test, the Employer will provide a chest x-ray at no cost. Upon request, a routine blood examination and urinalysis will be provided at no cost to the nurse once each year.

  • Random Testing Notwithstanding any provisions of the Collective Agreement or any special agreements appended thereto, section 4.6 of the Canadian Model will not be applied by agreement. If applied to a worker dispatched by the Union, it will be applied or deemed to be applied unilaterally by the Employer. The Union retains the right to grieve the legality of any imposition of random testing in accordance with the Grievance Procedure set out in this Collective Agreement.

  • Acceptance Testing At the time of installation of a LIS trunk group, and at no additional charge, acceptance tests will be performed to ensure that the service is operational and meets the applicable technical parameters.

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