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  2. Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Total_dissolved_solids

    TDS = k e EC. where TDS is expressed in mg/L and EC is the electrical conductivity in microsiemens per centimeter at 25 °C. The conversion factor k e varies between 0.55 and 0.8. [5] Some TDS meters use an electrical conductivity measurement to the ppm using the above formula. Regarding units, 1 ppm indicates 1 mg of dissolved solids per 1,000 ...

  3. Tax deduction at source - Wikipedia

    en.wikipedia.org/wiki/Tax_deduction_at_source

    Tax deduction at source (TDS) has come into existence with the motive of collecting tax from different sources of income. As per this concept, a person (Payer) who is responsible to make payment of specified nature to any other person (Payee) shall deduct tax at source before making payment to such person (Payee) and remit the same into the account of the Central Government.

  4. Thermal desorption spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Thermal_desorption...

    Temperature programmed desorption (TPD) is the method of observing desorbed molecules from a surface when the surface temperature is increased. When experiments are performed using well-defined surfaces of single-crystalline samples in a continuously pumped ultra-high vacuum (UHV) chamber, then this experimental technique is often also referred to as thermal desorption spectroscopy or thermal ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Value-added tax - Wikipedia

    en.wikipedia.org/wiki/Value-added_tax

    The Goods and Services Tax (GST) is an abolished value-added tax in Malaysia. GST is levied on most transactions in the production process, but is refunded with exception of Blocked Input Tax, to all parties in the chain of production other than the final consumer. The existing standard rate for GST effective from 1 April 2015 is 6%.

  7. Thermodynamic equations - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_equations

    The first and second law of thermodynamics are the most fundamental equations of thermodynamics. They may be combined into what is known as fundamental thermodynamic relation which describes all of the changes of thermodynamic state functions of a system of uniform temperature and pressure.

  8. Formula calculator - Wikipedia

    en.wikipedia.org/wiki/Formula_calculator

    The formula calculator concept can be applied to all types of calculator, including arithmetic, scientific, statistics, financial and conversion calculators. The calculation can be typed or pasted into an edit box of: A software package that runs on a computer, for example as a dialog box. An on-line formula calculator hosted on a web site.

  9. Goods and services tax (Canada) - Wikipedia

    en.wikipedia.org/wiki/Goods_and_services_tax...

    The goods and services tax [1] (GST; French: Taxe sur les produits et services) is a value added tax introduced in Canada on January 1, 1991, by the government of Prime Minister Brian Mulroney. The GST, which is administered by Canada Revenue Agency (CRA), replaced a previous hidden 13.5% manufacturers' sales tax (MST).