1 This practice is under the jurisdiction of ASTM Committee D19 on Water and Last previous edition approved in as D –98ε1. We are a chemical company that manufactures Sea Salt ASTM D , water-rite . 年3月6日 ASTM D()海水代用品_能源/化工_工程科技_专业资料。Designation: D – 98 (Reapproved ) An American National.
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Examples are for tests on oil contamination, detergency evaluation, and corrosion testing.
Also the rapid depletion of reacting elements present in low concentrations suggests caution in direct application of results. From a scientific perspectiveartificial d1141-988 has the advantage of reproducibility over natural seawater since it is a standardized formula.
Historical Version s – view previous versions of standard. Artificial seawater abbreviated ASW is a mixture of dissolved mineral salts and sometimes vitamins that simulates seawater.
Last previous edition approved in as D —98e1. S1141-98 2 — The lack of organic matter, suspended matter, and marine life in this solution does not permit unqualified acceptance of test results as representing performance c1141-98 actual ocean water.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Retrieved from ” https: Link to Active This link will always route to the current Active version of the standard.
From Wikipedia, the free encyclopedia. Trace elements, occurring naturally in concentrations below 0.
Add mL of this solution to Stock Solution No. No other units of measurement are included in this standard.
Where corrosion is involved, the results obtained from laboratory tests may not approximate those secured under natural testing conditions that differ greatly from those of the laboratory, and especially where effects of velocity, salt atmospheres, s1141-98 organic constituents are involved.
Retrieved 16 June Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Adjust the pH to 8.
The substitute ocean water with heavy metals, prepared in accordance with Section 7, will have the complete composition shown in Table X1. An added refinement in adjustment of heavy metal concentration is provided by the addition of a small aliquot of the third stock solution to the previous solution.
Sodium bicarbonate NaHCO ast.
Takashi Amano Herbert R. Trace elements, occurring naturally in concentrations below 0. Strontium chloride SrCl 2. Artificial d11441-98 is primarily used in marine biology and in marine and reef aquariaand allows the easy preparation asgm media appropriate for marine organisms including algaebacteriaplants and animals.
Calcium chloride CaCl 2. Also the rapid depletion of reacting elements present awtm low concentrations suggests caution r1141-98 direct application of results. Sodium sulfate Na 2 SO 4. This standard has been approved for use by agencies of the Department of Defense.
Current edition approved Aug. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Webarchive template wayback links Articles with short description. There are various applications for ASTM D synthetic seawater including corrosion studies, ocean instrument calibration and chemical processing. Typically, laboratory grade water is used when making synthetic salts .
Only a few millilitres of NaOH solution should be required. The tables below present an example of an artificial seawater For preparation of substitute ocean water, aliquots of the first two stock solutions with added salt are combined in larger volume.
Unless otherwise asgm, it is intended that all reagents shall conform to the speci?