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#1
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JA-RO-CA Enterprises Flasking Hood
Does anyone have any experience with or comments on this flasking hood? http://www.jaroca.com/ There are three models, that retail for $1,072.50 to $1,122.50 each (plus $88.00 shipping) for the Class 100 (99.97%.) units. The brochure mentions that they meet or exceed the Federal Standard No. 209A which requires particle count not to exceed a total of 100 particles per CU. Ft. 0.5 microns and larger. The blower puts out 200 CFM. The literature says, "Provides up to 75 FPM positive pressure to prevent airborne contaminants from entering cabinet." Some experts feel 100 FPM is appropriate air flow, not 75 FPM: http://www.fungifun.com/flowhood/match.htm Also offered is a filter-blower assembly (no hood) at $588.50 plus $? shipping. Replacement HEPA (High Efficiency Particulate Air) filters are $165.00 for the 99.97%, and $258.50 for the ULPA 99.99%, with prefilters $66.00 per dozen. It looks easy enough to construct one: How to construct a hood: http://www.fungifun.com/flowhood/ HEPA flitter sources: http://www.hepafilters.com/CFS/filte...rance_sale.htm http://www.filtersrx.com/sizes.asp?CAT=HEPHP9 Source for blowers: http://www.grainger.com/Grainger/pro...mId=1611630999 http://www.surpluscenter.com/sort.as...03061222210572 Your thoughts? |
#2
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JA-RO-CA Enterprises Flasking Hood
http://www.geocities.com/~marylois/arch207.html
OrchidSafari's 'Boyz in the Hood' by Ed Wright. You can build your own for much less than $1000...... K Barrett |
#3
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JA-RO-CA Enterprises Flasking Hood
On Wed, 25 Jun 2003 20:36:03 GMT, "K Barrett"
wrote in Message-Id: TInKa.18626$3d.11800@sccrnsc02: http://www.geocities.com/~marylois/arch207.html OrchidSafari's 'Boyz in the Hood' by Ed Wright. You can build your own for much less than $1000...... K Barrett Thanks for the link, Kathy. Ed did a nice job, and shared a lot of arcana. I would only have wished for a little more specific information regarding CFM, etc. The pictures made up for a lot though. Did you ever find a laser pen strong enough to use on contamination? |
#4
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JA-RO-CA Enterprises Flasking Hood
Larry,
I built mine for a couple hundred dollars years ago. I expect it has a smaller HEPA filter than the one you quoted a price for -- I do not think I paid more than 100 bucks last time I replaced it. I am sure it meets no standards, but my contamination rate is very low. When selecting a blower it is critical to get one designed to operate at the high static pressure required to get the air through the filter. Looking at just the CFM is not enough. Best deals I have seen on hoods are at state surplus auctions. Here in VA, I see nice hoods (the open front workstation type) come up every couple of months. They sell for very cheap money. Pat "Larry Dighera" wrote in message ... Does anyone have any experience with or comments on this flasking hood? http://www.jaroca.com/ There are three models, that retail for $1,072.50 to $1,122.50 each (plus $88.00 shipping) for the Class 100 (99.97%.) units. The brochure mentions that they meet or exceed the Federal Standard No. 209A which requires particle count not to exceed a total of 100 particles per CU. Ft. 0.5 microns and larger. The blower puts out 200 CFM. The literature says, "Provides up to 75 FPM positive pressure to prevent airborne contaminants from entering cabinet." Some experts feel 100 FPM is appropriate air flow, not 75 FPM: http://www.fungifun.com/flowhood/match.htm Also offered is a filter-blower assembly (no hood) at $588.50 plus $? shipping. Replacement HEPA (High Efficiency Particulate Air) filters are $165.00 for the 99.97%, and $258.50 for the ULPA 99.99%, with prefilters $66.00 per dozen. It looks easy enough to construct one: How to construct a hood: http://www.fungifun.com/flowhood/ HEPA flitter sources: http://www.hepafilters.com/CFS/filte...rance_sale.htm http://www.filtersrx.com/sizes.asp?CAT=HEPHP9 Source for blowers: http://www.grainger.com/Grainger/pro...mId=1611630999 http://www.surpluscenter.com/sort.as...t=1&keyword=EB SA&catname=electric&UID=2003061222210572 Your thoughts? |
#5
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JA-RO-CA Enterprises Flasking Hood
No, I never did, and searching around for the original article that stated
that laser pens aided in heaking wounds yeilded nada either. Just another Urban Legend... K Barrett "Larry Dighera" wrote in message ... Did you ever find a laser pen strong enough to use on contamination? |
#6
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JA-RO-CA Enterprises Flasking Hood
On Wed, 25 Jun 2003 17:32:42 -0400, "Pat Brennan"
wrote in Message-Id: : Larry, I built mine for a couple hundred dollars years ago. I expect it has a smaller HEPA filter than the one you quoted a price for -- I do not think I paid more than 100 bucks last time I replaced it. The filter in the JA-RO-CA Enterprises Flasking Hood is about 1-foot by 2-feet. I am sure it meets no standards, but my contamination rate is very low. That's what counts. When selecting a blower it is critical to get one designed to operate at the high static pressure required to get the air through the filter. Looking at just the CFM is not enough. How does one do that? The JA-RO-CA Enterprises Flasking Hood uses two centrifugal blowers each mounted directly on an end of the motor shaft. The motor is rated for continuous duty, but that doesn't really address the issue of aerodynamic load on it. Best deals I have seen on hoods are at state surplus auctions. Here in VA, I see nice hoods (the open front workstation type) come up every couple of months. They sell for very cheap money. That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. What's your feeling about the possibility of success in purchasing a small HEPA room air filter unit, and adapting a hand-constructed plexiglass hood to it for use in flasking small batches? They are available for under $100 on eBay. Pat "Larry Dighera" wrote in message .. . Does anyone have any experience with or comments on this flasking hood? http://www.jaroca.com/ There are three models, that retail for $1,072.50 to $1,122.50 each (plus $88.00 shipping) for the Class 100 (99.97%.) units. The brochure mentions that they meet or exceed the Federal Standard No. 209A which requires particle count not to exceed a total of 100 particles per CU. Ft. 0.5 microns and larger. The blower puts out 200 CFM. The literature says, "Provides up to 75 FPM positive pressure to prevent airborne contaminants from entering cabinet." Some experts feel 100 FPM is appropriate air flow, not 75 FPM: http://www.fungifun.com/flowhood/match.htm Also offered is a filter-blower assembly (no hood) at $588.50 plus $? shipping. Replacement HEPA (High Efficiency Particulate Arresting) filters are $165.00 for the 99.97%, and $258.50 for the ULPA 99.99%, with prefilters $66.00 per dozen. It looks easy enough to construct one: How to construct a hood: http://www.fungifun.com/flowhood/ HEPA flitter sources: http://www.hepafilters.com/CFS/filte...rance_sale.htm http://www.filtersrx.com/sizes.asp?CAT=HEPHP9 Source for blowers: http://www.grainger.com/Grainger/pro...mId=1611630999 http://www.surpluscenter.com/sort.as...t=1&keyword=EB SA&catname=electric&UID=2003061222210572 Your thoughts? |
#7
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JA-RO-CA Enterprises Flasking Hood
That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. Transcendental shipment is usually more than you want to pay. Don't drink the 'kool-aid', regardless of what they promise you on the other side. *grin* Rob -- Rob's Rules: http://www.msu.edu/~halgren 1) There is always room for one more orchid 2) There is always room for two more orchids 2a. See rule 1 3) When one has insufficient credit to purchase more orchids, obtain more credit |
#8
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JA-RO-CA Enterprises Flasking Hood
If they will do transcendental shipping perhaps they will also accept
transcendental payment. It's worth asking. And yes, watch out for the cool-aide. |
#9
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JA-RO-CA Enterprises Flasking Hood
On Thu, 26 Jun 2003 12:36:31 -0400, Rob Halgren
wrote in Message-Id: : That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. Transcendental shipment is usually more than you want to pay. Don't drink the 'kool-aid', regardless of what they promise you on the other side. *grin* Rob Thanks. I needed that. :-) The size of the type on this 17" display set to a resolution of 1280 X 1024 is rapidly becoming too small for my deteriorating visual acuity. This is especially true when my spell checker presents the replacement words in inverse video. Of course, that was meant to be 'transcontental.' |
#10
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JA-RO-CA Enterprises Flasking Hood
Maybe transcontinental?
"Larry Dighera" wrote in message ... On Thu, 26 Jun 2003 12:36:31 -0400, Rob Halgren wrote in Message-Id: : That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. Transcendental shipment is usually more than you want to pay. Don't drink the 'kool-aid', regardless of what they promise you on the other side. *grin* Rob Thanks. I needed that. :-) The size of the type on this 17" display set to a resolution of 1280 X 1024 is rapidly becoming too small for my deteriorating visual acuity. This is especially true when my spell checker presents the replacement words in inverse video. Of course, that was meant to be 'transcontental.' |
#11
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JA-RO-CA Enterprises Flasking Hood
Larry Dighera wrote: Of course, that was meant to be 'transcontental.' Hope that's no relation to incontinent-al. Sounds messy. |
#12
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JA-RO-CA Enterprises Flasking Hood
We built ours for under $100 with flexiglass from Home Depot and glued
it together. My husband cut the armholes a bit tight as he used car wax cans to hold the gloves. (Actually, he does the flasking.) It is enclosed on all sides and has a removable top cover that contains rubber weatherstrip edges. All in all, we have never had contamination from using this chamber. But, surely it is costly to built a flasking hood yourself. It also is time consuming. So, indeed if time is important then it might be best to go out and buy one. And surely JA-RO-CA has been around for a while. .. . . Pam Everything Orchid Management System http://www.pe.net/~profpam/page3.html -------------------------------------------------------------------------------------- Larry Dighera wrote: On Wed, 25 Jun 2003 17:32:42 -0400, "Pat Brennan" wrote in Message-Id: : Larry, I built mine for a couple hundred dollars years ago. I expect it has a smaller HEPA filter than the one you quoted a price for -- I do not think I paid more than 100 bucks last time I replaced it. The filter in the JA-RO-CA Enterprises Flasking Hood is about 1-foot by 2-feet. I am sure it meets no standards, but my contamination rate is very low. That's what counts. When selecting a blower it is critical to get one designed to operate at the high static pressure required to get the air through the filter. Looking at just the CFM is not enough. How does one do that? The JA-RO-CA Enterprises Flasking Hood uses two centrifugal blowers each mounted directly on an end of the motor shaft. The motor is rated for continuous duty, but that doesn't really address the issue of aerodynamic load on it. Best deals I have seen on hoods are at state surplus auctions. Here in VA, I see nice hoods (the open front workstation type) come up every couple of months. They sell for very cheap money. That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. What's your feeling about the possibility of success in purchasing a small HEPA room air filter unit, and adapting a hand-constructed plexiglass hood to it for use in flasking small batches? They are available for under $100 on eBay. Pat "Larry Dighera" wrote in message .. . Does anyone have any experience with or comments on this flasking hood? http://www.jaroca.com/ There are three models, that retail for $1,072.50 to $1,122.50 each (plus $88.00 shipping) for the Class 100 (99.97%.) units. The brochure mentions that they meet or exceed the Federal Standard No. 209A which requires particle count not to exceed a total of 100 particles per CU. Ft. 0.5 microns and larger. The blower puts out 200 CFM. The literature says, "Provides up to 75 FPM positive pressure to prevent airborne contaminants from entering cabinet." Some experts feel 100 FPM is appropriate air flow, not 75 FPM: http://www.fungifun.com/flowhood/match.htm Also offered is a filter-blower assembly (no hood) at $588.50 plus $? shipping. Replacement HEPA (High Efficiency Particulate Arresting) filters are $165.00 for the 99.97%, and $258.50 for the ULPA 99.99%, with prefilters $66.00 per dozen. It looks easy enough to construct one: How to construct a hood: http://www.fungifun.com/flowhood/ HEPA flitter sources: http://www.hepafilters.com/CFS/filte...rance_sale.htm http://www.filtersrx.com/sizes.asp?CAT=HEPHP9 Source for blowers: http://www.grainger.com/Grainger/pro...mId=1611630999 http://www.surpluscenter.com/sort.as...t=1&keyword=EB SA&catname=electric&UID=2003061222210572 Your thoughts? |
#13
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JA-RO-CA Enterprises Flasking Hood
Sorry about the delay in answering, been off at a flower show.
The filter in the JA-RO-CA Enterprises Flasking Hood is about 1-foot by 2-feet. yep, my hood uses as 1 by 1 filter. I am sure it meets no standards, but my contamination rate is very low. That's what counts. If that is what counts and you will only be making a limited number of flasks, a glove box is a good option. Remember 10 bottles means something like 300 plants and to grow out that many will requires some space. When selecting a blower it is critical to get one designed to operate at the high static pressure required to get the air through the filter. Looking at just the CFM is not enough. How does one do that? The JA-RO-CA Enterprises Flasking Hood uses two centrifugal blowers each mounted directly on an end of the motor shaft. The motor is rated for continuous duty, but that doesn't really address the issue of aerodynamic load on it. I called the filter manufacture and asked what a typical flow through the filter was and what the static pressure was at that flow rate. I then went to the Grainger catalog and found a blower that meet the requirement. I found this flow was too much (I flame tools) so I added a motor rheostat and only use it at full speed when I first start the hood. How much flow that is actually need is tied to how big the openings are for your hands. The bigger the openning, the bigger the required flow is. As you use your filter, it will slowly get clogged. As it gets clogged, static pressure will increase and your blower must work harder. I blew my first blower by working it too hard with a clogged filter. My hood now has a static pressure gauge. At full speed a new filter has a static pressure of .4 inches and is replaced before 1 inch. Best deals I have seen on hoods are at state surplus auctions. Here in VA, I see nice hoods (the open front workstation type) come up every couple of months. They sell for very cheap money. That sounds encouraging. I'm tempted to ask if you'd be willing to act as my agent in procuring one for me. But the cost of transcendental shipment might not make such an arrangement practical. My cost would be greater then the filter and the shipping combined. All I was saying is that there are a lot of these things floating around. Find out how local universities and public heath offices dispose of surplus equipment, I bet in time there is a hood at the end of the search. What's your feeling about the possibility of success in purchasing a small HEPA room air filter unit, and adapting a hand-constructed plexiglass hood to it for use in flasking small batches? They are available for under $100 on eBay. Beats me. The filters look very different, but the ads say they produce similar results. The air intake will have to be outside of the box which may take some doing. The way I flask, the unit would have to be able to stand up to bleach which is unlikely, but maybe you could find a way around that. Pat |
#14
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JA-RO-CA Enterprises Flasking Hood
Thank you for sharing your knowledge and experience.
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#15
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JA-RO-CA Enterprises Flasking Hood
On Fri, 27 Jun 2003 16:12:25 -0700, profpam wrote in
Message-Id: : We built ours for under $100 with flexiglass from Home Depot and glued it together. That is encouraging. However you must have an inexpensive source for flitter media. The cost of the HEPA filter alone is nearly that much on the price lists I've seen. My husband cut the armholes a bit tight as he used car wax cans to hold the gloves. (Actually, he does the flasking.) It is enclosed on all sides and has a removable top cover that contains rubber weatherstrip edges. All in all, we have never had contamination from using this chamber. Oh. I thought you were talking about a laminar flow hood, but I see now that yours is a glove-box. But, surely it is costly to built a flasking hood yourself. It also is time consuming. So, indeed if time is important then it might be best to go out and buy one. And surely JA-RO-CA has been around for a while. . . . Pam Everything Orchid Management System http://www.pe.net/~profpam/page3.html I'll probably give the hood construction project a try just for the fun of it. Thanks for sharing your experience and knowledge. |
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