%UVB vs actual - TanToday - Helping Salon Owners, One At A Time, Since 2000!

njtanning · 11th December 2006, 04:41 PM

I recently read cosmedico's Absolute Power Rankings (http://www.cosmedico.com/north_am/_p...lute_power.pdf) and wondering if anyone else was aware of this. Also had a question as to how can the UVA and UVB amounts can be collected?

solarmeter® · 11th December 2006, 05:58 PM

What - you've never heard of UV meters????

http://www.islandsuntimes.com/04-06/measure.htm

Forgettabout those "watts flux" values you see on the Cosmedico site. Nobody can measure those things unless you have a giant 7' dia ping pong ball integrating sphere.

The correct way is mW/cm² as the meters read.

Total UV (A+B) from Model 5.0.
UVB from Model 6.0.
Percent B = 6.0 / 5.0 reading.

www.solarmeter.com

Din · 11th December 2006, 06:04 PM

Your meters are a great idea steve, but that doesn't help us until we pay for the lamps and install them and use them. We'd like to know the numbers before we make the purchase. Otherwise we are wasting money on both lamps and meters if the lamps are useless to me to begin with.

It's about damn time they show us their numbers. Now if only they can produce better numbers...

solarmeter® · 11th December 2006, 08:40 PM

Agreed. NONE of the lamp makers provide UV output numbers EXCEPT Cosmedico... so kudo's to them!

However the numbers they provide (watts flux) are unintelligible to anyone except a scientist with a giant white ping pong ball... costing hundreds of thousands of dollars.

You can sort of convert watts-flux to mW/cm² if you know how many cm² your single lamp is and divide the watts by 1000 to get milliwatts. But who the hell does THAT? Besides... they don't say what distance the watts-flux apply at.

Also.... if all the other lamp makers published their watts-flux of UVA and UVB at the same distance in the same integrating sphere... then fine. But they dont. So you are stuck with your buck-and-a-half Solarmeters.

Even the gold-standard Optronics spectralradiometers bed makers use (or hire out) for FDA certification read in watts per unit area... not flux.

So.... call Cosmedico and tell them to vote for mW/cm² !!

Din · 11th December 2006, 09:04 PM

Quote:

Originally Posted by solarmeter®

So.... call Cosmedico and tell them to vote for mW/cm² !!

Yeah that's what i'm doing.......

11th December 2006, 04:41 PM	#1 (permalink)
njtanning All Star Join Date: Nov 2006 Location: NJ Posts: 79	%UVB vs actual I recently read cosmedico's Absolute Power Rankings (http://www.cosmedico.com/north_am/_p...lute_power.pdf) and wondering if anyone else was aware of this. Also had a question as to how can the UVA and UVB amounts can be collected?

11th December 2006, 05:58 PM	#2 (permalink)
solarmeter® UV Geek Squad Join Date: Nov 2004 Location: Lake St Clair Posts: 3,326	Re: %UVB vs actual What - you've never heard of UV meters???? http://www.islandsuntimes.com/04-06/measure.htm Forgettabout those "watts flux" values you see on the Cosmedico site. Nobody can measure those things unless you have a giant 7' dia ping pong ball integrating sphere. The correct way is mW/cm² as the meters read. Total UV (A+B) from Model 5.0. UVB from Model 6.0. Percent B = 6.0 / 5.0 reading. www.solarmeter.com

11th December 2006, 06:04 PM	#3 (permalink)
Din Smartass Canuck Moderator Join Date: Feb 2005 Location: Canada Posts: 9,092	Re: %UVB vs actual Your meters are a great idea steve, but that doesn't help us until we pay for the lamps and install them and use them. We'd like to know the numbers before we make the purchase. Otherwise we are wasting money on both lamps and meters if the lamps are useless to me to begin with. It's about damn time they show us their numbers. Now if only they can produce better numbers... __________________ www.ChronosMarketing.com ____________________________________________ The problem nowadays is stupidity. Why don't we just take the safety labels off everything and see what happens?

11th December 2006, 08:40 PM	#4 (permalink)
solarmeter® UV Geek Squad Join Date: Nov 2004 Location: Lake St Clair Posts: 3,326	Re: %UVB vs actual Agreed. NONE of the lamp makers provide UV output numbers EXCEPT Cosmedico... so kudo's to them! However the numbers they provide (watts flux) are unintelligible to anyone except a scientist with a giant white ping pong ball... costing hundreds of thousands of dollars. You can sort of convert watts-flux to mW/cm² if you know how many cm² your single lamp is and divide the watts by 1000 to get milliwatts. But who the hell does THAT? Besides... they don't say what distance the watts-flux apply at. Also.... if all the other lamp makers published their watts-flux of UVA and UVB at the same distance in the same integrating sphere... then fine. But they dont. So you are stuck with your buck-and-a-half Solarmeters. Even the gold-standard Optronics spectralradiometers bed makers use (or hire out) for FDA certification read in watts per unit area... not flux. So.... call Cosmedico and tell them to vote for mW/cm² !!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode