Where to get customized UV glass cut?

[Cookiemunster]

Hi there,

can anyone tell me where I can get customized cut out UV glass? My RIGA light hood glass cracked.

Thanks

[weileong]

You might like to try the Lexan Thermoclear, absorbs more than 99% of UV but cuts the visible down to abt 80+ percent.

This world is never too perfect

[roidan]

but there is this heat problem....the acrylic may not take extended heat periods well..hehe

it can take up to 100degrees before degradation..but if u notice any drop of water on the MH glass will turn into steam immediately..meaning more than 100degrees liao...

"Lexan Thermoclear sheet has a continuous-use temperature of 100°C. At the other end of the scale the minimum continuos- use temperature has been set at -40°. However, using Lexan Thermoclear at lower temperatures is possible since the embrittlement temperature is as low as -110°C. "

so....not viable..hehehe

[weileong]

I thought it was 270 degs. Ah I see again and it's in degs F heheheh.

[roidan]

in fact, lexxan has many many models that can block UV..not only thermoclear...but most can tahan up to 100degrees only...

really bo bian...i last time used one piece...it warped until it fell out of the holder for the glass....hahaha

[uncleliew]

ever thought platen glass of photocopier can absorb uv. please read article from this link

http://info.anu.edu.au/hr/OHS/Hazard_Alert...hotocopiers.asp

if someone can confirm that, i can spare Cookiemunster a platen glass foc.

[weileong]

what are you using now??

[roidan]

ever thought platen glass of photocopier can absorb uv. please read article from this link

http://info.anu.edu.au/hr/OHS/Hazard_Alert...hotocopiers.asp

if someone can confirm that, i can spare Cookiemunster a platen glass foc.

not very effective also...but helps abit maybe..

but remember they strongly advise not to look at the light and cover the flap when u do your photocopying

[Tango_Liverock]

Any kind soul pls tell me what is UV glass ?

A glass of 6mm would cut-off abt 50% of UV. Isn't it enough ?

Anyone know which part of UV is harmful ? UV-A, UV-B, UV-C ?

[roidan]

if bro tanggy is here, he will tell u that tempered glass is good enough to block off harmful UV rays

but i disagree slightly from him...i find that tempered glass is good for strength and anti-splintering but does not remove UV rays by alot..especially if using 400W lamps...maybe using tempered glass with 150W or 250W may be ok...

well...but i dunno..hehe

[weileong]

UV-C is the most harmful. The Ozone layer in our atmosphere actually blocks all the UV-C.

[Tango_Liverock]

by definition UV radiation is btw one (1) to 400 nm.

UV-B is probably (?) btw 290 - 300 nm

Notice some MH light fixture claims its UV protected.

Just wondering what is the spec of those glass ?

[weileong]

UV spans from 100-400nm if I remember correctly.

UV-A 320-400nm

UV-B 280–320nm

UV-C 200-280nm

UV-B cause sunburn FYI.

[Tango_Liverock]

read somewhere tampered glass actually improve UV pass-thru ?

[Tango_Liverock]

Do some search,

Though not able to find the suppliers for UV filtering glass, would like to share some info gathered:

How UV glass would look like this:

http://www.petsforum.com/personal/trevor-j...50WLampFix1.JPG

Possible supplier for UV filter glass. Some architecture or building material bros might be able to make query for us:

http://www.sekisui.com.sg/product_pages/s-...t/feature4.html

UV-A 315 - 380 nm tanning effect

UV-B 280 - 315 nm cause sunburn and ocular disorders (eg, snow blindness)

UV-C 200 - 280 nm very dangerous components which is stopped by the Ozone Layer

Ref: http://www.essilor.com.sg/Library/oof_coatings.pdf

Educating if you like reading :

Photocatalytic kinetics of phenol and its derivatives over UV irradiated TiO2

http://cheed.nus.edu.sg/~cheakr/Publicatio...angApplCatB.pdf

Do post the contact if you know where to get UV filter glass

[Cookiemunster]

Thanks for the comments so far brothers.

However, can anyone tell me where I can custom cut out a piece of replacement glass?

[boxfish]

this could be a million dollar question...

the most classified info for reefing in singapore

[dersuz]

I am also looking for UV glass for MH, kindly let me know.

[Cookiemunster]

I am also looking for UV glass for MH, kindly let me know.

sure bro....once I find out I'll let you know too.