Archive for the ‘filters’ Category
Is Apatite a safe material to be used on air purifier filters?
I learned that the Sharp air purifiers’ HEPA filters have an Apatite component to it that apparently provides antibacterial properties to protect the filters from microbial accumulation. Is Apatite a relatively "safe" material to use for an air filter, i.e. is it safe for the resident who is breathing air that comes through the filter? Apatite (a very general term) is usually made up of phosphorus and calcium, but some variants (ie. arsenates like mimemite) may contain arsenic. Could this be a health issue for users? Would the filters use arsenic-based variants in the first place, or are other forms more prevalent and likely to be used in medical/industrial applications?
Apatite is a group name for hexagonal or pseudohexagonal monoclinic arsenates, phosphates and vanadates.
In general use ‘apatite’ is often used in particular for the Calcium Phosphate minerals, Fluorapatite, Chlorapatite and Hydroxylapatite.
There is no specific data on health dangers or toxicity for this mineral.
It is unlikely that an arsenate would be used in this application. The other forms are quite prevalent and more of these are actually mined as ore.
What is the purpose of activated carbon in aquarium filters?
Could someone please tell me what the real purpose of activated carbon in aquarium filters is? Does it remove ammonia?
Ghapy has your best answer.
however carbon does not only absorb trace elements but organics as well as inorganics like, metals, ammonia, nitrates/nitrites salts and verious chemicals from the water.
the reason carbon won’t remove lots of ammonia. It’s lifespan as was mentioned is about 2 weeks before it becomes useless. Depending on how many other compounds are in the tank like salts, nitrates/nitrites and various chemicals used to adjust algae, medicines etc the carbon quickly becomes clogged and useless. The padded coating will still remove the bulk waste but the carbon has seen its day. It becomes saturated with these unseen components. While it does remove the bad stuff, it also removes the good stuff.
That is not to say everyone should stop using carbon filters, they serve their purpose and especially for beginners.
Going carbonless as G mentioned is something seasoned fishkeepers already know.
Web 2.0 Expo NY: Clay Shirky (shirky.com) It’s Not Information Overload. It’s Filter Failure.
It’s Not Information Overload. It’s Filter Failure.
Duration : 0:23:51
What is the difference between star type and coil type fuel filters?
Few months ago by mistake we replaced coil type filter by star type of our tractor. Lately we noticed that they are different types of filters. Is it going to affect our tractor’s functionality?
Would use a genuine filter unless the star has been recommended for your tractor.
What is the best brand of fish tank filters?
I have ehiem filters right now. They are cleaning a 100 gallon tank.
For hang on filters, you cannot beat Marineland Biowheel or Hagen Aquaclear. Both are affordable and reliable.
For canister filters, I love Eheim. They just work. The Hagen Fluvals are also very good.
For a wet/dry box nearly any brand will work. You can make your own with a plexiglass box and some pool tubing.
For your 100 gallon system, I would keep on with the Eheims. If you want to add some flowl get a biowheel.
Filter – Hey Man Nice Shot Lyrics
Sing the song
lyrics below
I wish I wouldve met you
Now its a little late
What you couldve taught me
I couldve saved some face
They think that your early ending
Was all wrong
For the most part theyre right
But look how they all got strong
Thats why I say hey man nice shot
What a good shot man
A man
Has gun
Hey man
Have fun
Nice shot
Now that the smokes gone
And the air is all clear
Those who were right there
Got a new kind of fear
Youd fight and you were right
But they were just to strong
Theyd stick it in your face
And let you smell what they consider wrong
Thats why I say hey man nice, nice shot
What a good shot man
A man
Has gun
Hey man
Have fun
Nice shot
I wish I wouldve met you
I wish I wouldve met you
Id say
Nice shot
Duration : 0:5:25
What kind of gas mask filter filters smoke?
I’ve done a little bit of research on gas masks(the different types, the different kinds of filters, etc.) but what kind of filter filters smoke(smoke from burning plastics, wood, other flammable materials, etc.)? Would an activated charcoal filter filter smoke?
Any decent particulate filter will remove smoke particulates
But removing the particulates does not necessarily make the air breathable; you must also remove noxious gases.
An activated charcoal filter is not intended to remove particulates, but it is intended to remove some noxious components.
In order to choose the proper filter, you need to know what is burning and the type of byproducts produced. Masks have interchangeable filters to allow optimal filtration for the type of substance that you’re working with
Is it OK to include the used Coffee FILTERS in my compost pile?
I know the grounds are acceptable, but I don’t know if the filters are……. Many thanks!
Yes. Better if you buy the unbleached filters, but the bleached ones will be fine too.
Are there special filters that should be used for digital slrs?
I need some new filters for my D200. Today, at my local camera store, I was told there are new "digital filters" that I should buy (they cost a lot more) instead of the old "analog filters" because digital filters supposedly will work better on a digital camera. The salesperson, with whom I have dealt many times and is pretty knowledgeable, couldn’t explain why, other than to say it was because there are differences in the ways a digital sensor and film react to light. Is there anything to this? Ever since I got a digital SLR, I have been using my old lenses and filters, and have never noticed any issue.
In my opinion its just a marketing ploy to seperate you from your money. Since film is rated as an ISO number and your digital camera has ISO settings does it really make sense to say "… there are differences in the ways a digital sensor and film react to light."? hmmmm… On second thought, they do "react" differently. Light striking film causes a reaction of the silver halides which has to be chemically processed. Light striking a digital sensor creates an image electronically.
I know for certain that a linear polarizer will not work with a camera with through the lens metering, film or digital. I also know that a linear polarizer will mess up AF.
If the store allows a return policy maybe you could buy a so-called "digital" version of the filter you use the most. Then do a side by side comparison. If you can’t tell any difference then you’ll know its just hype.
Tutorial on how to use filters, by WDC Part 1
How to use filters, tutorial by What Digital Camera magazine: Part 1
Part 2: http://uk.youtube.com/watch?v=PxqaZ_vlGfQ
Duration : 0:6:27