Hi , I'm told by a seller that FRP tank will leach chemicals over time ? Can someone clarify ? Luckily haven't put up order.
Thanks
outdoor water filter
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 May 16 2014, 06:08 PM
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#1
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Junior Member
50 posts Joined: Dec 2010 
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Hi , I'm told by a seller that FRP tank will leach chemicals over time ? Can someone clarify ? Luckily haven't put up order. Thanks |
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May 19 2014, 10:00 AM
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#2
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QUOTE(OneMoreDay @ May 18 2014, 12:30 AM) I found this from a document on FRP tank specifications. Source: Here Thanks bro , I guess those tanks on sale in Malaysia are China-made. China can't even produce proper baby formula let alone FRP tanks I suppose. I'm just worry that over time the tank will leech toxins like those plastic drinking bottles."Potable (drinking) water has been a longstanding use for FRP. Apart from corrosion resistance with prevents damage or rust tastes, FRP surfaces are smooth to reduce areas which may harbor growth of algae or microorganisms. FRP can also avoid problems with certain potentially harmful trace metals. The most important considerations for potable water is to use a resin with a composition deemed acceptable from a health or regulatory standpoint. The curing technique is extremely important, along with a good extent of cure to minimize styrene and other compounds which can infiltrate the water. With the passage of the federal Clean Drinking Water Act, standards have become more stringent as well as more complicated to understand. Even though many certified standardized tests are used, the emphasis is now on risk assessment, where components and fabrication methods are scrutinized by third parties, such as NSF. The risk assessment involves not only resin constituents and extractables, but potential toxicity, mutagenicity, and carcenogenic aspects. Increasingly, states are adopting the requirements of ANSI/NSF Standard 61. Currently DION® Impact 9102-00 holds a certified listing for use as a barrier material in accordance with Standard 61. This relates to tanks >10 gallons or piping > 6 inches in diameter at ambient temperature. Among other things, the requirements entail post-curing for 4 hours at 160oF, followed by 2 hours at 180oF. Additionally DION® 9100 vinyl ester as well DION® 6631 series and Polylite® 33433-01 isophthalic resins, are approved in accordance with British Standard BS 6920.This standard is very stringent and tests effect of taste, appearance, growth of aquatic microorganisms, effects of organic extractions (monkey kidney cell vero), and trace metals. DION® 382 and DION® 9800 have also been approved by in Norway by Folkehelsa for use in drinking water applications involving North Sea oil platforms and ships." I also found the following information on another site. Source: Here "Due to the corrosion resistant nature of FRP, the tank can be made entirely from the composite, or a second liner can be used. In either case, the inner liner is made using different material properties than the structural portion The liner, if made of FRP is usually resin rich and utilizes a different type of glass, called "C-Glass", while the structural portion uses "E-Glass". The thermoplastic liner usually is PE or ABS. This thermoplastic liner is not considered to contribute mechanical strength. The FRP liner is usually cured before winding. Typical FRP temperature limits are almost depend on the resin use. The thermoplastic resin will suffer from creep at elevated temperatures and ultimately fail. The typical maximum is 49 degrees Celsius."  |
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Jun 9 2018, 10:20 PM
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#3
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50 posts Joined: Dec 2010
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Hi all ,
Is Blondal M2 Plus outdoor filter good ? Is it really a Swedish company? I’m looking for a reliable outdoor filter possibly stainless steel food grade because it will be installed under direct sunlight. |
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