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For general purposes, buffers at pH 4.00 and pH 10.00 are suitable. The pH meter has one calibration control to set the meter reading equal to the value of the first standard buffer and a second control to adjust the meter reading to the value of the second buffer. A third control allows the temperature to be set.
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1] Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...
This category contains articles about pH indicators: chemical compounds which change colour or fluorescence in response to changes in pH Wikimedia Commons has media related to PH indicators . Subcategories
Thu Duc is a class-1 city of Ho Chi Minh City and the first city to use city-within-city model in Vietnam. [11] [12]Thủ Đức City has 34 wards: An Khánh, An Lợi Đông, An Phú, Bình Chiểu, Bình Thọ, Bình Trưng Đông, Bình Trưng Tây, Cát Lái, Hiệp Bình Chánh, Hiệp Bình Phước, Hiệp Phú, Linh Chiểu, Linh Đông, Linh Tây, Linh Trung, Linh Xuân, Long Bình ...
Originally, many thước of varying lengths were in use in Vietnam, each used for different purposes. According to Hoàng Phê (1988), [1] the traditional system of units had at least two thước of different lengths before 1890, [2] the thước ta (lit. "our ruler") or thước mộc ("wooden ruler"), equal to 0.425 metres (1 ft 4.7 in), and the thước đo vải ("ruler for measuring ...
1973: National Academy of Technology disbanded, the school was renamed University of Technology and later became a member of Thu Duc Institute of Technology. 1976: The school was named Ho Chi Minh City University of Technology according to Decision No. 426/TTg dated October 27, 1976, with 5 faculties: Civil construction, Electrical engineering ...
Hồ Đức Phớc (Vietnamese pronunciation: [ho˨˩ ʔɗɨk̚˧˦ fək̚˧˦]; born November 1, 1963) is a Vietnamese politician and Doctor of Economics. He is currently Deputy Prime Minister, a member of the 15th National Assembly of Vietnam.
Vietnam National University, Ho Chi Minh City was founded on 27 January 1995 by Government Decree 16/CP on the basis of the merger of nine universities (members): University of Ho Chi Minh City, Thu Duc Technology Training University, Ho Chi Minh City University of Technology, Ho Chi Minh City University of Agriculture and Sylviculture, University of Economics, University of Accounting and ...