In this "How To" I'll show you how I remove paint using Caustic Soda.Find us on the DMC (Diecast & Modellers Community) Facebook group https://www.faceb. The PLA carrier is dipped into the solution bath for smoothing. 0000045590 00000 n Ethyl acetate is an ethyl acetate formed from acetic acid and ethanol. You need rubber gloves, old clothes that cover your arms, safety glasses. 0000109807 00000 n Pour the white vinegar directly onto the stain, allow the liquid to penetrate the area for 20 minutes, and scrub with a stiff-bristled brush. How To Stream Philo To Chromecast From Iphone. Let the heat and soap work gently on the paint. What happens when sodium hydroxide is added to silicate? Application of direct current to the cell produces chlorine gas at the anode, and caustic soda plus hydrogen at the cathode. Caustic solution was injected through a Berea core, and silicate and aluminate were observed in the effluent, indicating silicate-mineral dissolution in a flowing mode. Immediately after removing rust, neutralize the acid with a baking soda-water paste (1:1). A highly caustic solution in a hot tank or spray washer can be very effective cleaning agent for removing most contaminants from iron heads and blocks. The temperature rises to 70 oC. Wipe away any residue with a damp cloth and dry the granite for a smooth, shiny surface. In a small bowl mix together equal parts oil and baking soda and stir to combine. I recall from a training video some time ago that this reaction blinded an operator at a soft drinks manufacturer when he was mixing a cleaning solution. Wear all the protective gears. 0000028037 00000 n Dip paper towels into the hot vinegar and stick them to the glass. You must log in or register to reply here. Info: How to Add or Replace a Septic Sewage System, Bottling Pressurized Methane from Well Water. My brother in law said he would unblock it and poured caustic soda crystals down the plughole. To avoid or compensate for these unsightly side effects in 3D printing with PLA filament, PLA can be smoothed or dissolved using various approaches. Dissolving PLA with caustic soda. These cookies will be stored in your browser only with your consent. Tanks are made of mild steel. Quickly and gently blot or brush away excess chemical. If any particular ad is your REASON for blocking ads, please let us know. It is often used when dissolving PLA, but has the disadvantage that the PLA surface becomes softer and somewhat stickier. Having said that, however, a 5% caustic solution shouldn't damage tiles. Eddy. Combine olive oil and baking soda. Quantities hard to estimate, however would estimate less 300 kg. The answer is simple: In most cases, chemical products are used to dissolve PLA, although there are also gentle treatment options. This changes the acidity of the water, which helps to prevent fouling of the membranes used to filter out the salty water a major cause of interruptions and failures in typical reverse osmosis desalination plants. 0000084342 00000 n This cookie is set by GDPR Cookie Consent plugin. Why was distilled water used to dissolve sodium hydroxide? It is one of the most common alternatives to plastic and therefore suitable for various 3D printing objects with numerous uses. A humble household sink plunger may be all you need to get out of your predicament and may help you avoid breaking into the pipes. A print object can possibly be damaged by dissolving PLA with the solvents mentioned. 0000050612 00000 n Step 1: Gather your materials. For all challenges, on the other hand, there are experts who already have proven solutions ready. 112 0 obj <>stream Maybe not the best Forum for your question. The chemical reaction would be written as NaOH (solid) -> Na+ (aqueous) + OH- (aqueous), which is just a dissolution process and gives backjust what the tankpresumably contained in the first place before it was emptied - caustic soda solution. Water is incompressible, and plunging is more effective when you're not pumping air. Soak the sponge in a dish with equal parts water and vinegar and wipe the spot where the dried up oven cleaner was. Disclosure: Links marked with * are Affiliate Links. It generates a lot of heat, and due to the rapid evaporation of water, may even explode. This fast, easy . Here is something my chemical supplier wrote to me about it because he wanted to make sure my equipment didn't have any present before cleaning and passivation: My experience of this dust is that the kit needs to be degreased / "de-dusted" and unfortunately, simply recirculating hot detergent didn't work, so I had to resort to getting inside and manually scrubbing with nylon brushes and scotchbrite pads etc, with strong degreasant (we used a commercial kitchen type - no idea what sort as this was in France a couple of years ago) After a couple of goes, I then recirculated 5 % formulated caustic at 80 deg C for an hour, rinsed off - grease swab tested and then passivated with 5% nitric at 60 C for over an hour. Short rinse in solvent based degreaser to remove polish residue. The latter goes to the separator to produce a caustic soda solution with a concentration of about 30%. If the boiling water doesnt help, try lukewarm. Login or register to use them, Crystal Caustic Soda Tank Cleaning Method Statement, Crystal Caustic Soda Tank Cleaning Method Statement -, YAF.NET 2003-2023, Yet Another Forum.NET. For additional details, refer to our Privacy Policy. How to Remove Limescale. I would call a plumber but the mortgage payments are taking up all my wages! 0000062424 00000 n 4-The red started disolving immediately. With his mind made up on soda blasting, Winn . Just try it on a very small print area. 0000062024 00000 n It's the caustic soda (or lye) in Drano that lifts the teflon layer. This is then subjected to electro-dialysis processing, which produces sulfuric acid and sodium hydroxide. To rehab them, we let the cooled pans sit overnight with the following treatments using baking soda, vinegar, and soap, all of which contain compounds that help to dissolve the fatty-acid resins and help them release from the metal surface. 5.3.6 Increased lustre. 0000045712 00000 n A second application may be required. Leave it for at least 2 hours. 0000091818 00000 n Caustic soda is used in the production of pretzels to create crispness and a golden color. 0000030953 00000 n Be VERY careful as caustic soda/lye/sodium hydroxide is very dangerous. He has now tested dozens of 3D printers and is happy to share the collected experience with each new article. 54 0 obj <> endobj Este foarte periculos, si nu va recomand. Acetone, however, is one of the solvents with rather low costs. The cookie is used to store the user consent for the cookies in the category "Other. Hold the plunger at an angle over the drain opening to allow it to fill with water, then fit it around the drain and pump vigorously. 0000019894 00000 n Caustic soda or sodium hydroxide (NaOH) is the chemical commonly used in alkaline cleaning solution for clean-in-place (CIP) in process plants. Sprinkle a damp rag or sponge with a generous amount of baking soda. Im sure youve wondered if PLA is even dissolvable. regulated, low odor, and non caustic (wont burn your skin.). Use a scraper to scrape off as much of the cigar smoke residue as possible. The tank is aproximately 15000 litres capacity, however there is a small quantity of crystalised caustic soda which needs to be removed. Whether a filament dissolves easily depends on numerous factors. However, experts advise against the use of this highly dangerous chemical, especially at home. However, if you approach this matter professionally and responsibly, nothing will happen to your printed piece and it will have a smooth and attractive surface. Beginners as well as printing experts like to work with this filament. 0000116069 00000 n It is also this composition of the PLA filament with other components that can positively or negatively influence the dissolution of the filament. If the blockage is in the trap itself, you'll want to empty the trap in a bucket as soon as you remove it and take the trap outside to chip out the hardened material. Use baking soda. If I have the quantities right thats about 100g caustic in 2L, which is too much by at least a factor of 10. Use the solution to scrub the cap as well, both inside and out. However, you may visit "Cookie Settings" to provide a controlled consent. Method 1: Wash With Soap and Water. Caustic consumption by kaolinite was observed: 1.0 N NaOH solution was found to precipitate at 0.03 equiv/ (kg kaolinite)/h when mixed with kaolinite at 70/sup 0/C. One study found that of the commonly used detergents tested, caustic soda was the most effective in the removal of cells and biofilms from plastic and metal surfaces. You will need some of the tools like caustic soda, goggles, gloves, a face mask, and a bowl of warm water. I'd go into Crommelins in Welshpool and talk to the guys in there. Alkali attack on borosilicate glass as a function of time For example, in order to remove a layer of about 1 m, you can expose the glass for a period of approximately 40 min to an alkaline solution with c (NaOH) = 1 mol/l at 100 C. I washed it off with a warm water solution and vinegar, and this morning I think I am in deep trouble, the white veil of residue is 100% worse, and the tiles have lost their sheen. tb1234. 13 DO NOT use any aluminium or alloy container as this will be dissolved by the the solution. Heres a step-by-step guide: Combine two cups of warm water with one tablespoon of washing-up liquid and one tablespoon of white vinegar. Are they polished? The rapidly growing desalination industry produces water for drinking and for agriculture in the worlds arid coastal regions. below, credit the images to "MIT.". Wanted to let everyone know how it has all played out. To remove sodium hydroxide and other sodium residues, you can use 1M HCl acid and DI water alternatively for few times at lost neutralize the solutions pH with water. Try a DILUTE solution, and a small section, since you don't want to be splashing the stuff around onto your clothes, skin and eyes. %%EOF Costly, refer to free methods first; the Permaloid cleaner has a similar effect; acetone is found in every home. If methylamine or dichloromethane are used as solvents for PLA in the industrial sector, carefully defined protective measures are taken there. Rinse water sampling involves taking a sample of an equilibrated water rinse (usually water for injection or pure water) that has been recirculated over all surfaces. It is also used to remove cells and biofilms from winery surfaces. Looks like you might have "mill scale" issues. Mix a teaspoon of bleach with a teaspoon of baking soda in your water bottle. If I had to do this again, since the results seem to depend on the particular glass pane, I think I would first start with caustic soda on a corner. JavaScript is disabled. This website uses cookies to improve your experience while you navigate through the website. 0000008134 00000 n Line a bowl with foil and pour in hot water. Apply a new layer of oven cleaner over the dried up spot. You can remove oil stains from pavers by first soaking up the oil with paper towels or rags and then using cat litter to soak even more up. You're then left with a rock-hard mass that you have to clean out mechanically. Repeat until clarity returns to the affected car windows, and then rinse with clean water. Some solvents can lead to harmful effects if used incorrectly. For only a few wine bottles this may be 2 tablespoons of both oil and baking soda, but for more wine bottles use - cup of each. hb``e``3f`a`,1f`@ V68M:0s"'XC'_8mvH%-A ]. Water is life. 2- Add adequate water to your disposable bucket. The CIP system is run by digital computer called programmable logic controllers (PLCs) to control the flow, temperature, and time for the chemical solutions, which could be acidic, alkaline or sometimes both, to achieve maximum cleaning. But opting out of some of these cookies may affect your browsing experience. Caustic soda is used to clean and sanitize tank exteriors, usually in a 5% liquid solution. Before wiping begins, allow the equipment to dry after the cleaning procedure and moisten the sampling sheet included in the meter kit with water for injection or pure water. Depending on the CIP system, chemical solutions may flow back to a reservoir so that they can be re-used or drained immediately after they have been used. Then thoroughly rinse the area with clean water. Some brother in law. 0000028539 00000 n Blot until stain has disappeared or reduced to your satisfaction. how to remove caustic soda residue Fill half of the remaining distance to the top with hot water, the closer to boiling the better (but not boiling). I will take precautions as best I can. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Anodize 6. it will work is a different matter - that will depend on the type of. We had great results using the above method. 0000004043 00000 n In a bowl, mix three tablespoons of lemon juice (concentrated or fresh) to one cup of water. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Failing to clear the drain with a plunger or bladder, your next step should be to disassemble the P-trap and physically clear the material out of the drain. In the case of the popular PLA filament, there are other points that play a role in the dissolving of the filament in addition to the composition: As with all other products from the 3D printing segment, it is recommended that you set high-quality standards from the very beginning when purchasing your filaments. 4. Mop up the Goo Gone with straight Simple Green. When it comes to caustic soda for dissolving PLA, the opinions of consumers vary widely. The cookies is used to store the user consent for the cookies in the category "Necessary". My suspicion is that this is not formulated with appropriate types of, and levels of wetting agents and rinsing agents etc. The containers for the caustic solution and the storage of caustic soda should also meet high safety standards. I earn from qualifying purchases if you decide to make a purchase through these links at no additional cost for you! Repeat as needed. Chemical solvents may draw moisture from the printed object; therefore, it is advisable to keep it in a temperature and humidity controlled environment until final completion; chemicals necessary to dissolve PLA plastic can be harmful and dangerous. This is then subjected to electro-dialysis processing, which produces sulfuric acid and sodium hydroxide. Often the safety instructions are also printed on the packaging, cans, containers or bottles. We may share certain information about our users with our advertising and analytics partners. 0000003290 00000 n He added water to the dry granules in a container and stirred it - it boiled and he was sprayed in the face with the resulting solution. 0000069389 00000 n Grease does not penetrate into concrete and its removal needs scraping and scrubbing. Add baking soda. Let the vinegar sit for 30 to 60 minutes. How Old Is Michole Mcbroom, Spray vinegar on the door and let it sit for a few minutes. 6 How do you make cloudy glasses clear again? Use a pressure hose with hot water to wash your homemade caustic off the wall. Caustic soda and warm hot water on the paint spill and let it do its job. Experts in this field work with different options, depending on the type of print objects. We use a site made sodium hydroxide solution(10-15%) in a boil out tank to remove aluminum residue from our steel tooling and to do sample etching as well. See some suggestions on how to remove it. How Many Wives Can A Mormon Have, A paste with baking soda and water applied to the area can soothe the burn and help further neutralize it. 2. The pre-rinse, alkali circulation, and other steps must take place in correct order. Wipe in just one direction to ensure a streak . The meter analyses as little as 0.3 ml sample and delivers result in just few seconds. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. This cookie is set by GDPR Cookie Consent plugin. 0000121201 00000 n Currently, the world produces more than 100 billion liters (about 27 billion gallons) a day of water from desalination, which leaves a similar volume of concentrated brine. Theyd be able to recomment a wet look clear coating that should cover up the white. PLA can be dissolved by solvents such as acetone, ethyl acetate, methyl ethyl ketone, tetrahydrofuran and caustic soda (sodium hydroxide). However, they quickly strip old paint and varnish from parts. 55 For example, sodium silicate is used for processing fibers such as cotton and jute as a buffer for peroxide 56 bleaching and as a detergent for cleaning and processing the fibers. Remove the poultice from the stain. 0000068514 00000 n A primer paint spray also contains a small amount of chemicals, but is far less harmful than corrosive solvents used to dissolve PLA. 13 Let it sit for 10-15 minutes. should do a good job on it. Bring one cup of white vinegar to a boil on the stove or in the microwave. Even dissolving PLA is not a Sisyphean task. Distilled water was used to dissolve sodium hydroxide pellets to prevent any effect of unknown contaminants. One way you can dissolve PLA with caustic soda is by adding caustic soda to water to make an alkaline solution and soaking the PLA part in the solution. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Therefore, caution is required so that your 3D printed object is not destroyed when using acetone. Chemical residues from cleaning solutions can be monitored by specific or non-specific analytical method. Step 3: Make a baking soda paste. Be sure to be wearing gloves, goggles and clothing that covers your forearms to protect yourself from splashes. The material PLA is easy to handle. It looks like you're using an ad blocker. If the result is perfect, then go for it. If you are looking for innovative powder coat removal/strippers that will work with a variety of applications including stubborn rims and aluminum wheels check out the Miles 8659 Gel or Lye will get VERY HOT when it disolves in water and when mixed with an acid like vinegar. Also known as caustic soda, sodium hydroxide or NaOH, the alkali used in caustic washes have a very high pH in a concentration range of 0.5-2.0%. The chemical reaction would be written as NaOH (solid) -> Na+ (aqueous) + OH- (aqueous), which is just a dissolution process and gives back just what the tank presumably . Asim Kumar Roy Choudhury, in Principles of Textile Finishing, 2017. Nitric acid is the most commonly used wash for scale removal and pH stabilization after a caustic wash. At a typical concentration of 0.5%, it can be used effectively at lower temperatures than caustic solutions, requiring less heating. Oven Cleaner; Oven cleaners are designed Independent Researcher. Sprinkle a damp rag or sponge with a generous amount of baking soda. Remove the glasses and the cloudiness should have vanished. 0000003133 00000 n 0000037087 00000 n Rinse the sponge and repeat the scrubbing until all of the detergent is removed. Make a thick paste of 3 tsp. The safety data sheets for chemical products for dissolving PLA are like the fine print. At least I only had to remove 2 floorboards and the problem wasn't too far from the sink! So, for me just water flush, provide chemical PPE in case of splashback. (I can't buy Caswell degreaser due to air freight) 3. Changes in the concentrations of the following aqueous species were monitored with time: sodium, silicate, aluminate, and hydroxide. Rinse with distilled water and buff dry with a soft cloth. Make a mixture of three parts baking soda to one part warm water, and combine until smooth.Apply a thin layer of the paste to your granite surface, and gently buff with a clean cloth. When removing the old coating, this type of wood becomes fibrous, which makes it difficult to prepare it for re-painting. As CIP offers fast, repeatable, and effective cleaning without chemical exposure risk to people, it is utilized in industries that require high levels of hygiene such as dairy, beverage, processed foods, pharmaceutical, and cosmetics. Try a DILUTE solution, and a small section, since you don't want to be splashing the stuff around onto your clothes, skin and eyes. 3. Use a drain auger, or snake, to clear blockages in the waste line past the trap. in physics and has gained many years of experience in industry as a lab manager and quality assurance manager. Do you have any questions or requests? Lienhard is the Jameel Professor of Water and Food and the director of the Abdul Latif Jameel Water and Food Systems Lab. This website is managed by the MIT News Office, part of the Institute Office of Communications. In this case, the crystals will settle in the trap or some other place in the pipes and won't dissolve. Film on shower doorsClean them with vinegar, baking soda, and salt. This changes the acidity of the water, which helps to prevent fouling of the membranes used to filter out the salty water a major cause of . startxref Theyre buying it, spending money on it. Used to do this kind of operation a lot, processes releasing tanks / vessels for maintenance etc. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. We add 25kg of sodium hydroxide to approx 300 litres of water at 20 oC in a cleaning bath. Both of these are extremely nasty materials, so you should be sure to work in an open area and use your best gloves. The filament PLA, which is frequently used in the 3D printing segment, belongs to the polyactide (PLA) group of plastics. Depending on the concentration, they dissolve the polymer faster or slower. This cookie is set by GDPR Cookie Consent plugin. I have limited experience using lactic acid, but don't see why it shouldn't wok, though if I was going to brew bitters, pale ales I would be tempted to use food grade sulphuric - over here at least it is cheaper and gives good, repeatable results. 7 What happens when sodium hydroxide is added to silicate? Therefore, a particular cell volume is needed to maintain the desired print characteristic. The chemical solutions are circulated through a circuit of tanks and/or lines to eliminate contaminants or product residues and are rinsed out with water. Please help. Sodium silicate is mentioned 57 specifically as an agent for degumming of jute fibers (Wang, et al., 2008). The researchers have discussed the concept with companies that may be interested in the next step of building a prototype plant to help work out the real-world economics of the process. I have bought all the parts I think I need so hopefully I will be able fix it. Some of the Al went into the small microscopic indentations of the Fe during the original joining, and is now oxide. Caustic washes soften fats, making them easier to remove. Martin has a M.Sc. The recovered caustic soda is recycled at the alumina refinery and sulfuric acid is recycled in the soda recovery leaching process. Asphalt and Bitumen. The blue disolved to a point where the blue was a residue that simply wiped off. Yes. How Long Does It Take To Unlock Allied Races, 0 Various chemical products for dissolving PLA are listed below: Acetone is widely used and a product that almost everyone has at home. Tetrahydrofuran, also oxolane, is mostly used in the industrial sector today for the complete dissolution of PLA and other materials. It may not display this or other websites correctly. If you wonder which quantity is the right one, it is better to use it sparingly at first. The named solvents from this guide are versatile. The research team also included MIT postdoc Katherine Phillips and undergraduate Janny Cai, and Uwe Schroder at the University of Braunschweig, in Germany. In addition, tetrahydrofuran can cause severe damage to health when inhaled over time. At the equivalence point, the moles of acetic acid are equal to the moles of sodium hydroxide, and the solution will turn pink as more sodium hydroxide is added. Among the most important components for pricing are the quality of the solvent, the quantity, and the store or online store where you purchase the best agent for your needs. Any residue may be removed by the method formulated for petroleum oils. 0000034438 00000 n suitable for your water. Caustic soda, or sodium hydroxide (NaOH), is used as a strong base in the manufacture of products that form a daily part of our lives, including pulp and paper, detergents, textiles and more. Environmentally safe discharge of brine is manageable with current technology, but its much better to recover resources from the brine and reduce the amount of brine released, Lienhard says. PLA is often also referred to as polylactic acid. Whether you prefer to use effective chemical products or consider more gentle options is always in the eye of the beholder and is your personal decision. By clicking Accept All, you consent to the use of ALL the cookies. I suppose previously, you just let the metal sit in an hydroxide solution to dissolve the Al. Never mix Lye / sodium hydroxide with vinegarnever. Apply a coat of acetone or nail polish remover to the uncured foam, being sure to work it in thoroughly, and then use either a scraper or sandpaper to remove any remaining residue. Calibrate the LAQUAtwin B-722 or Na-11 sodium ion meter according to manufacturers instructions using the 150ppm and 2000ppm sodium ion standards included in the kit. Anthony Maher - Perth,Western Australia, Australia ^ Please Use Extreme Caution Looking at the item I would say use caustic soda lye. Any guidance appreciated. You should not use too aggressive agents at home anyway. What happens when you mix vinegar and sodium hydroxide? It can be difficult in the case of pine species called "pitch pine". The water will just dissolve the caustic soda, producing an alkaline solution with corrosive properties. Vinegar, an acid, does indeed neutralize NaOH or KOH, both bases, but there are serious downsides to doing this kind of chemistry directly on the body. Spray rinse 7. Non-specific methods that detect the presence of blend of ingredients are pH, conductivity, and total organic carbon (TOC). Soak in warm Simple Green and agitatate until water sheets ok 4. Dip paper towels into the hot vinegar and stick them to the glass. What are the physical state of oxygen at room temperature? What Is the final finish on the tanks? 0000099294 00000 n Score: 4.7/5 (5 votes) . Massachusetts Institute of Technology77 Massachusetts Avenue, Cambridge, MA, USA, Karl-Lydie Iata ce se intimpla cind torni apa fierbinte in soda caustica. MIT News | Massachusetts Institute of Technology, Turning desalination waste into a useful resource. 0000050230 00000 n PLA is one of the most widely used plastic filaments in 3D printing. Chan, C.C., Lam, H., Zhang X., Practical Approaches to Method Validation and Essential Instrument Qualification. Process developed at MIT could turn concentrated brine into useful chemicals, making desalination more efficient. Depending on the concentrations, there could be a lot of heat which could splash you with some of the unreacted caustic soda. The cookie is used to store the user consent for the cookies in the category "Analytics". How do professionals clean glass shower doors? Id go into Crommelins in Welshpool and talk to the guys in there. Which options the consumer uses to dissolve PLA is purely a matter of choice. Hopefully it won't be too difficult and I will manage to resolve the problem without getting caustic soda on myself or anything else! This seems to have set and now the sink is completely blocked. With caustic soda, plastic pipes can see extreme effects, so you may have to replace the trap. Your peel-away option will direct you to lay peeling strips on top of the mix. Many brewers however use a combined sanitiser/detergent, usually a chlorinated caustic formulation, to clean and sanitise in one operation. Rinsing it off prior to drying really does help tremendously. To measure, wipe the surface with a moistened sampling sheet then place it onto the sensor. 4 Recommendations. How to Unclog a Drain Clogged With Cat Litter. Before starting to work with it, the user should be aware of its properties, know what safety precautions to follow, and know how to react in case of contact. Re: Caustic Soda Etch Thanks M_D, I have just finished a run as follows: 1. Rinse the concrete surface and scrub vigorously with a stiff brush and clean water. Let it sit for 4-5 days before removing. how much rainfall to be considered a desert? How long to wait to use vinegar and baking soda in sink after using drain cleaner ? Baking soda is very effective and a fast way of removing paint from a metal. 8 Why was distilled water used to dissolve sodium hydroxide? http://www.easy2diy.com/cm/easy/diy_ht_3d_index.asp?page_id=35749924, Bill Gates mansion bathroom tour with Terry Love. Is there any way to dissolve the caustic soda that has set? Rinse water sampling and wipe sampling are two sampling methods for measuring cleaning chemical residues. The recovered caustic soda is recycled at the alumina refinery and sulfuric acid is recycled in the soda recovery leaching process. Bring one cup of white vinegar to a boil on the stove or in the microwave.

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