Filtes What is the difference between an HMC filter and one that is not HMC?
151670
Hoya Standard filters have one layer of anti-reflectant coating to each surface of the glass to suppress reflection and increase light transmission. HMC (Hoya Multi-Coated) have 3 layers of anti-reflectant coatings on each surface to reduce average reflection down to 3.0% or less. Hoya S-HMC (Super HMC) also have 6 layers of anti-reflectant coatings. Finally, the Super HMC PRO 1 is made of thinner glass (only 1mm thick), also with 6 layers of anti-reflectant coatings bonded to each surface of the glass.
2011472
Buyer beware as there are a TWO different filters being sold under the SAME basic HC-504 nomenclature. The original/good version is 1.25" thick, whereas many of the more recent offerings are only 0.75" thick, therefore with MUCH less moisture-delivering efficiency/life, yet at the same price. Worse yet, often the images shown in Amazon are dimensionally proportional to the original/good ones but what they really ship is the inferior version - I know because I just returned six filters to Amazon but got stuck with shipping charges and wasted time. Someone else suggested another source (filters-now dot com) and I'm sending them an inquiry based on the above. (PS- some of the filter offerings tout a blue "dust catching" wrap that IMHO is pure marketing hype.)
1613767
No. Here is a link to the correct filter; Holmes HEPA Type Filter HAPF30D-U2, Filter A, 2 Pack
1888023
As far as I can tell the difference is only in the price. Both filters work equally well with the Franke Triflow faucet system for the kitchen.
1568922
The black filters are better per many recommendations. If you have any concerns about contaminants get the extra filter for arsenic and such. It slows the filtration but pulls out heavy metals.
2056095
There is one additonal filter between the bag and HEPA fiter. in the bag chamber. This filter gets changed after using four bags, and is included in each box of Miele genuine bags. Its a guick and simple change. I hope that helps. Filtration is exceptional on this model.
1804665
Hello Mark, I am not sure but in using this product it did not have the heft other filters have. It was a bit flimsy and you may want to use two together for better results. At one time I had bought a case of good pre-filters on ebay but have yet to find that brand again, tho I have not made a a thourough search as yet. Hope this helps.. :)
2075414
They seem exactly the same in regard to functionality. The only difference I can tell is that this one has a hard plastic shell and the round one does not. This would be useful in cases where liquid can get on the filter or stray sparks could land on it and cause damage (in uses with welding). This one is protected against the elements and will therefore last longer. I'm sure the round filters are fine if well taken care of and not used in environments where they can get damaged. Hope this helps.
2128938
I purchased this filter to use with a Shop Vac Hang Up Mini, which appears to be similar to the 500x. My vac originally came with a foam sleeve, paper filter and mounting ring. I replaced the paper filter with this one (still using the foam sleeve and mounting ring) with no issues. Hope this helps.
1394990
The filters (2) are proprietary and only available from Trend. They are high quality foam type filters but I don't think they are hepa rated. I use the Airshield for woodturning and find it to be very effective for air filtration and face protection.
1229415
Sorry can't really answer this accurately because they sent me the wrong filter.
752657
Who knows? There are better filters out there. The one I got did not come with any paper work that details its campliblities. A monolithic filter or the ones that go in a Berky are good filters. They list exactly what they filter out.
527682
The "E" is the E core type filter. They have a plastic core rather than metal and a flat plate on top that helps you get the filter on the threads easier. We see no problems with either design and they are interchangeable.
1217363
This filter is made with 2 screens instead of 1 like most other filters. It works well.
199842
These are not true HEPA filters; they are HEPA-type filters. True HEPA filters are available at http://www.amazon.com/Holmes-HAPF30D-Replacement-HEPA-Filter/dp/B0045LQCIO.
1597689
Yes it is Multicoated. You will see on the ring that is says "Hoya HMC". The HMC is Hoya's designatin for "Hoya Multi Coated". This is a great filter and find myself using it more and more all the time for long exposure shots.
830803
The filter basket (the plastic basket that holds either a disposable paper filter or a permanent filter) is included, as is a filter disk. Paper filters are easy to find, and I think I recall that 1 was included. The permanent filters work well, and may be worth the few extra $.