| 词条 | Wash bottle |
| 释义 |
|name = Lab Wash Bottles |image = Lab wash-bottles water EtOH.jpg |alt = |caption = Plastic wash bottles for ethanol and water |acronym |other_names = Squeeze Bottle |uses =To clean laboratory glassware and other equipment. They are filled with appropriate cleaning liquids, and poured over the tool that needs to be cleaned. |notable_experiments = The wash bottle is generally used in the clean-up phase of many experiments |inventor = |manufacturer = |model = |related = }} A wash bottle is a squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks. Wash bottles are sealed with a screw-top lid. When hand pressure is applied to the bottle, the liquid inside becomes pressurized and is forced out of the nozzle into a narrow stream of liquid. MaterialsMost wash bottles are made up of polyethylene, which is a flexible solvent-resistant petroleum-based plastic. Most bottles contain an internal dip tube allowing upright use. Wash bottles may be filled with a range of common laboratory solvents and reagents, according to the work to be undertaken. These include deionized water, detergent solutions and rinse solvents such as acetone, isopropanol or ethanol. In biological labs it is common to keep sodium hypochlorite solution in a wash bottle to disinfect unneeded cultures. Colour codes on wash bottlesThere are a consistent set of colour codes and markings used to identify the contents of wash bottles. Red is used for acetone, White for ethanol or sodium hypochlorite, green for Methanol is yellow for isopropanol and blue for distilled water. {{Citation needed|date=January 2019}} SafetySafety warning labels are also used to identify potential hazards. Where reagents with high vapour pressure are used such as ethanol or methanol, small pressure release holes are incorporated into the cap to release and excess vapour pressure and avoid material being ejected through the nozzle when not in use. AdvantagesThe use of wash bottles helps rusers control and measure the precise amount of liquid used. In addition, unwanted substances or particles cannot pass through wash bottles.[1] The use of wash bottles is more convenient than using beaker and graduated cylinders.[2] Storage of Wash BottlesWash bottles are typically kept on the laboratory bench in a secure way so that they can be easily located and so that they do not interfere with other work taking place. Such containment may be by the use of two ring clamps which have similar size attached to a lattice rod. [3] TypesDifferent types of wash bottles are suitable with different types of substances. A spiral gas-lift wash bottle, for example, is suitable for eliminating gas with the liquid system having two phases like bromide and water.[4] In addition, a Simple graduated wash bottle helps determine the amount of liquid used.[5] A type of strong solvent and a type of destructive substance can be dealt with Nalgene Teflon FEP wash bottles since the special type of plastic is used to produce this type of wash bottles.[6] GallerySee also
References1. ^{{cite journal |last1=Woodrift|first1=Ray|title=A Convenient Type of Wash Bottle|journal=Chemical Education |date=July 1940|volume=17|issue=7|page=323 |doi=10.1021/ed017p323 |url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/abs/10.1021/ed017p323|accessdate=3 March 2017|bibcode=1940JChEd..17..323W}} {{commonscat|Wash bottles}}{{Laboratory equipment}}{{DEFAULTSORT:Wash Bottle}}2. ^{{cite journal|last1=Rudolph|first1=Goetz|title=Wash bottle for volatile solvents|journal=J. Chem. Educ. |date=October 1977|volume=54|issue=10|page=634 |doi=10.1021/ed054p634|url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/abs/10.1021/ed054p634|accessdate=9 March 2017|bibcode=1977JChEd..54..634G}} 3. ^{{cite journal|last1=Kjonaas|first1=Richard A.|title=Storage of laboratory wash bottles|journal=Chemical Education|date=June 1984|volume=61|issue=6|page=541 |doi=10.1021/ed061p541 |url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/pdf/10.1021/ed061p541|accessdate=3 March 2017|ref=Chemical Education|bibcode=1984JChEd..61..541K}} 4. ^{{cite journal|last1=B. B.|first1=Corson |title=Absorption efficiency of spiral gas-lift wash bottle|journal=Analytical Chemistry|date=November 1938|volume=10|issue=11|page=646| doi=10.1021/ac50127a015|url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/abs/10.1021/ac50127a015|accessdate=17 March 2017}} 5. ^{{cite journal|last1=Earle R.|first1=Caley |title=Simple graduated wash bottles|journal=Analytical Chemistry|date=July 1929|volume=1|issue=3|page=162 |doi=10.1021/ac50067a027|url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/abs/10.1021/ac50067a027|accessdate=17 March 2017}} 6. ^{{cite journal|last1=Nalgene® Wash Bottles|first1=Nalgene® Wash Bottles |title=Wash Bottles|journal=Analytical Chemistry|date=October 1973|volume=45|issue=12|page=980A |doi=10.1021/ac60334a720|url=http://pubs.acs.org.ejournal.mahidol.ac.th/doi/abs/10.1021/ac60334a720|accessdate=17 March 2017}} 2 : Laboratory glassware|Bottles |
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