What Is a Clean Room? A clean room environment (it need not be an entire room, just a portion, sometimes called a “clean bench,”) is a place where the presence of airborn particles is reduced through highly filtered air and best practices, which reduce the generation of new particles. In an ISO Class 5, or…
This is a cheap way to make a cleanroom, or rather glovebox for working on drives. Works well and will get the small jobs done. When it is something important I usually use a cleanroom but you canuse a glovebox. In addition, when the platters spin, the air bearing created will usually spin off small debris. The drive was actually designed this way. However if you touch it, game over.
It took,
18″ x 24″ piece of plexiglass
rubbermaid 44 qt. clear storage bin
(2) 4″ male pvc adapters
1/8″ thick foam tape
1/8″ drill bit and drill
razor knife
#7 x 1/2″ sheetmetal screws (zip screws)
I had planned on finding some long gloves to use with it attached with large hose clamps but had no luck finding any so far. i will try the bait store next. for now i’ll just use latex gloves with open holes.
to cut the holes in the sides i used the 1/8″ drill bit and drilled holes close together around the lines i traced around the PVC fittings and connected the dots with the razor knife. then the pvc fittings were screwed in(don’t make the holes too big!) i then saved the circles that came out and foam taped around them with notches in either side of the tape around the circle so it could be applied w/o ripples. i will use them as hole plugs to keep the box clean when not in use. i will prolly epoxy some sort of handles or knobs on these so they can be removed easily from the outside of the box.
the hole in the lid was easily cut with the razor knife. the plexiglass was scored with the knife then snaped to size. holes were drilled in the plexiglass then wottled out to be oversized so the plexi didn’t crack when i put the screws in. the lid was a softer plastic and was not drilled. plexiglass was applied with foam tape and zip screws manually with a 1/4″ nut driver. the holes have to be close, i.e. 3″, together to ensure the foam tape sealed (silicone could be substituted here for foam tape)
one of these really isn’t essential for making syringes or even grain to grain transfers, but, after trying agar a few times without one, i decided i needed one.
Be careful with flammable disinfectants and flame in a glovebox, they can (and do) explode! Sanitizer fumes are also highly toxic to mycelia
A cleanroom is an environment, typically used in manufacturing or scientific research, that has a low level of environmental pollutants such as dust, airborne microbes, aerosol particles and chemical vapors. More accurately, a cleanroom has a controlled level of contamination that is specified by the number of particles per cubic meter at a specified particle size. To give perspective, the ambient air outside in a typical urban environment might contain as many as 35,000,000 particles per cubic meter, 0.5 μm and larger in diameter, corresponding to an ISO 9 cleanroom.
If the hard disk needs to be opened up, one has to do it within a cleanroom. The gap between the Read-Write head and the data platter is just a few microns. Any dust particles that get into the gap will induce “crashing” of the Read-Write head onto the data platter (where your magnetic data bits are stored) resulting in total and permanent loss of data.
A cleanroom is an environment, typically used in manufacturing or scientific research, that has a low level of environmental pollutants such as dust, airborne microbes, aerosol particles and chemical vapors. More accurately, a cleanroom has a controlled level of contamination that is specified by the number of particles per cubic meter at a specified particle size. To give perspective, the ambient air outside in a typical urban environment might contain as many as 35,000,000 particles per cubic meter, 0.5 μm and larger in diameter, corresponding to an ISO 9 cleanroom.
If the hard disk needs to be opened up, one has to do it within a cleanroom. The gap between the Read-Write head and the data platter is just a few microns. Any dust particles that get into the gap will induce “crashing” of the Read-Write head onto the data platter (where your magnetic data bits are stored) resulting in total and permanent loss of data.
1. US FED STD 209E was officially cancelled by the General Services Administration of the US Department of Commerce November 29, 2001, but is still widely used.
2. ISO 14644-1 cleanroom standards
3. BS 5295 Class 1 also requires that the greatest particle present in any sample does not exceed 5 μm.
picture 1: Air flow pattern for “Turbulent Cleanroom”
Picture 2: Air flow pattern for “Laminar Flow Cleanroom”
* Facilities
Walls, floors and ceilings
Paint and coatings
Construction material (sheet rock, saw dust etc.)
Air conditioning debris
Room air and vapors
Spills and leaks
* People
Skin flakes and oil
Cosmetics and perfume
Spittle
Clothing debris (lint, fibers etc.)
Hair
* Tool Generated
Friction and wear particles
Lubricants and emissions
Vibrations
Brooms, mops and dusters
* Fluids
Particulates floating in air
Bacteria, organics and moisture
Floor finishes or coatings
Cleaning chemicals
Plasticizers (outgasses)
Deionized water
* Product generated
Silicon chips
Quartz flakes
Cleanroom debris
Aluminum particles
1. All personal items such as keys, watches, rings, matches, lighters and cigarettes should be stored in the personal locker outside the gowning room.
2. Valuable personal Items such as wallets may be permitted in the cleanroom provided they are NEVER removed from beneath the cleanroom garments.
3. NO eating, smoking or gum chewing allowed inside the cleanroom.
4. Only garments approved for the cleanroom should be worn when entering.
5. NO cosmetics shall be worn in the cleanrooms. This includes: rouge, lipstick, eye shadow, eyebrow pencil, mascara, eye liner, false eye lashes, fingernail polish, hair spray, mousse, or the heavy use of aerosols, after shaves and perfumes.
6. Only approved cleanroom paper shall be allowed in the cleanroom.
7. Approved ball point pens shall be the only writing tool used.
8. Use of paper or fabric towels are prohibited. Use of hand dryers equipped with HEPA filters are suggested.
9. Gloves or finger cots should not be allowed to touch any item or surface that has not been thoroughly cleaned.
10. Only approved gloves, finger cots (powder-free), pliers, tweezers should be used to handle product. Finger prints can be a major source of contamination on some products.
11. Solvent contact with the bare skin should be avoided. They can remove skin oils and increase skin flaking.
12. Approved skin lotions or lanolin based soaps are sometimes allowed. These can reduce skin flaking.
13. All tools, containers and fixtures used in the cleaning process should be cleaned to the same degree as the cleanroom surfaces. All of these items are a source of contamination.
14. NO tool should be allowed to rest on the surface of a bench or table. It should be place on a cleanroom wiper.
15. Only cleanroom approved wipers are allowed to be used. The wipers must be approved for the Class of cleanroom being cleaned.
16. ALL equipment, materials and containers introduced into a sterile facility must be subjected to stringent sterilization prior to entrance.
17.NO ONE who is physically ill, especially with respiratory or stomach disorders, may enter a sterile room. This is a good practice in any cleanroom environment.
1. Fast motions such as running, walking fast or horseplay.
2. Sitting or leaning on equipment or work surfaces.
3. Writing on equipment or garments.
4. Removal of items from beneath the cleanroom garments.
5. Wearing the cleanroom garment outside the cleanroom.
6. Wearing torn or soiled garments.
