LASSAIGNE’S TEST Clause Samples

LASSAIGNE’S TEST. Place about 10 mg or one (1) (small) droplet of the unknown (A, B or C) and about 50 mg of freshly cut sodium metal into a glass tube (Note 1). Heat the tube as strongly as possible until the bottom of the tube is glowing red, holding the tube at this heat for about 5 min. For liquid unknown, start with moderate heating to avoid fast evaporation. Quickly plunge the hot tube into an evaporating dish containing distilled water (~ 10 mL) (Note 2) and cover the dish. Boil the solution on a hot plate for a few minutes while gently crushing the residue with a glass rod. Filter and a colorless filtrate should be obtained. If the volume of filtrate is too little, add distilled water to the filtrate. Use the filtrate for the tests below. A colored filtrate indicates incomplete decomposition and the entire fusion procedure will have to be repeated. Notes: 1. Precautions must be taken when handling sodium. Contact with sodium metal might cause ▇▇▇▇▇ on the human skin. When handling sodium metal, avoid all contact with water. 2. Generally, the glass tube will shatter, and any residual sodium will react with water. Cover the dish immediately with wire gauze once the tube is immersed in water to avoid any splatter. First aid measures to treat sodium induced injuries: 1. If splashed unto eyes, immediately flush water at the eye wash station for at least 15 minutes. Eye washing requires assistance to force the eye open, while reflexes try to shut the eye; attempts to do without help will almost certainly lead to loss of eye sight. Immediate action is required; the first five minutes will decide about saving or losing eyesight. 2. Upon skin contact, wash the part with lots of water for as long as possible. In all cases, one must seek medical aid as soon as possible. All accidents and dangerous occurrences must be reported immediately to the lecturer in charge or the demonstrator or the laboratory assistant. Apart from medical emergencies, sodium might also cause fire!
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Related to LASSAIGNE’S TEST

  • Alcohol Testing Alcohol testing will be conducted by using an evidential breath-testing device (EBT) approved by the National Highway Traffic Safety Administration. A screening test will be conducted first. This initial screening may be accomplished using a saliva test kit. If the result is an alcohol concentration level of less than 0.02 percent, the test is considered a negative test. If the alcohol concentration level is 0.02 percent or more, a second confirmation test using the EBT will be conducted. The procedures that will be utilized by the lab for collection and testing of the specimen are attached hereto as Appendix A.

  • Drug Testing (A) The state and the PBA agree to drug testing of employees in accordance with section 112.0455, F.S., the Drug-Free Workplace Act. (B) All classes covered by this Agreement are designated special risk classes for drug testing purposes. Special risk means employees who are required as a condition of employment to be certified under Chapter 633 or Chapter 943, F.S. (C) An employee shall have the right to grieve any disciplinary action taken under section 112.0455, the Drug-Free Workplace Act, subject to the limitations on the grievability of disciplinary actions in Article 10. If an employee is not disciplined but is denied a demotion, reassignment, or promotion as a result of a positive confirmed drug test, the employee shall have the right to grieve such action in accordance with Article 6.

  • 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.

  • 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.

  • Random Drug Testing All employees covered by this Agreement shall be subject to random drug testing in accordance with Appendix D.