Steralizing Ultra Violet

[gorillaproject]

I understand you have to steralize all the things you make and most people do this by putting it in a oven or on the stove; but why doesn't anyone use a UV light to kill all the viruses and bacteria?

Is this possable and would it degrade the hormone in anyway?

Let you know there are some bacteria that can stand up to 400 C

[monroe]

Re: Steralizing Ultra Violet

Originally posted by gorillaproject
I understand you have to steralize all the things you make and most people do this by putting it in a oven or on the stove; but why doesn't anyone use a UV light to kill all the viruses and bacteria?

Is this possable and would it degrade the hormone in anyway?

Let you know there are some bacteria that can stand up to 400 C

there is nothing against sterilization by pulsed UV light. that is if you can afford the equipment. most home chemist are content using their oven because its cheap and convenient. By adding ba you anyway did already a first sterilization process that you just complete by heating up.
See report below:

ULTRA-FAST STERILIZATION WITH INTENSE PULSED UV LIGHT
18 May 2003 14:50:15
Our newly discovered sterilization mechanism works during an intense light pulse from a flash lamp. This application was somewhat known but little understood before. Our validation of this mechanism gave us an advantage in design and manufacturing of effective and super fast sterilisation systems for packaging, medical, food and other markets.

This novel high-tech approach obtained support from reputable European research and development institutions and industrial companies, and was featured in quite a few journals, monographs and links from major related websites. Many of these materials in a pdf format can be accessed from our website.

THE METHOD IN BRIEF

While irradiated by this pulsed UV light above a certain pulse power (like above 3kw/cm² of UV light), a momentous overheating and a rupture of micro-organisms takes place. Pulse parameters have to be selected to assure that an energy pumping into a microorganism exceeds a cooling rate of UV-subjected microorganisms into the surrounding media or to an underlying surface. Compare original Aspergillus Niger spores on the left with what you see on the right: it is really lethal action.

PROCESS ADVANTAGES

Our systems use special linear flash lamps which fire pulses of UV light that penetrate deep into a treated media, achieving high degrees (up to six logs) of inactivation or destruction of all known micro organisms. Complete sterilisation can be also done with only UVB and UVA light by filtering the UVC (germicidal) light out. In other words, this method can sterilise through a clear packaging various items, such as medical solutions, medical devices or food items.

OPERATING ADVANTAGES

Advantages include: sterilisation in less than a second, low operational costs, easily adaptable to modern conveyer lines, lamps have no warm-ups and no mercury, a precise UV dosing by setting a pulse energy, pulse rate and cooling periods between pulses for cooling samples and/or the lamp itself.

OUR EQUIPMENT:

We offer a broad range of high quality automated systems which use high intensity pulsed UV light. Since it is a relatively new method, we suggest an evaluation of your needs with our pilot systems or offer you to do it on your won with our

LABORATORY, R&D AND SMALL PUV SYSTEMS

WT-Lab-Xe-MaticA (A-2L) is our most sold product. Its benefits include:

-Desk-top, simple to use
-Adjustable energy levels
-Single pulse and timed runs with many pulses
-Fully PLC controlled

The two lamps option (WT-Lab-Xe-MaticA-2L) has a sample table from a fused quartz and lamp modules positioned symmetrically above and below it. This is for sterilisation from both sides to occur at once.

Any of our pulsed UV systems could be adapted to perform specific tasks for a customer as soon as our evaluation shows the way to do so.

[Growing Doc.]

Just curious:
How about gamma-ray sterilization? I know the sterilize vials etc. that way.

[anatole]

gamma rays are very powerful, if you have access to radioactive sources ... it should do the trick!!!

[spidey]

LOL, Where are you going to get a gamma source? You can't just pick them up anywhere.

[Growing Doc.]

Let's say I find a gamma-ray source (in our university hospital or the physics dept.) ,
do you think the steroid could stand it?

[spidey]

Originally posted by Growing Doc.
Let's say I find a gamma-ray source (in our university hospital or the physics dept.) ,
do you think the steroid could stand it?

I think most would.

[ryubrir]

but you also need to know which chemicals can be decomposed by UV light... some are photosensitive..

[spidey]

Growingdoc is talking about gamma irradiation, not UV. Also, the exposure of the hormones to gamma rays would be very brief (a few seconds?) I think most things would hold up to that just fine.