Don Smith

A PM'er asked about how Cosmedico VHR's compare to Heraeus 160's and about the new VHR TT's.

In order to answer this question, you have to talk about 3 VHR's.

1. The VHR's that "captured" the 160-reflector market BEFORE the production was moved to Canada.

2. The VHR's that came from Canada in the first few production runs.

3. The VHR's that are coming now.

In summary, the VHR's that we get now (#3)are almost identical from a performance point of view to the original (#1) VHR's. The VHR's we recieved in the first few batches after the move to Canada (#2) were not equivalent to either the original or the current VHR's.

We, like many others, switched to the Hereaus 20/160 R's during the time that VHR's were not, IOP, performing well. The problem we had (confirmed by many other salons) was that there was a VERY high failure rate at about 450 - 500 hours on the Hereaus sunlamps. The dealer was very good about replacing those that failed but the problem is that "old Don" doesn't like to get "under the hood" and change lamps any more often than he has to! Our experience is that we always get more useful life from the VHR's than the 800 hours claimed (one lot number went 1180 hours before the output dropped to 70% of new!).

We get a te (time to 4.0 MED) time of approximately 2 minutes less on the new VHR TT's (9 minutes in a stand up and 11 in a lay down unit) than we get on the regular VHR's (11 minutes and 13 minutes).

Don

MJ

Reeeaaaalllyy, this is good .. I will be needing to change my Sundazzler soon.
I will have to look into the prices of these lamps.. thanks Don.

ellas14

Don,
On cosmo VHRs what reading should you get on the 6.0 solar meter before it is time to switch them out? Have you heard of the outragous ruva? If so what do you think about it on the 100 watt level.

Thanks Don,,

Don Smith

Ellas14:

I haven't heard of of "outrageous RUVA" sunlamps.

Regarding the use of the Solartech Model 6.0 hand-held radiometer. That is the UVB model and it has limited value except for (1) monitoring the % transmission properties of you acrylics (UVB "loss" will be the first thing you will see when acrylics start to go bad), and (2) the UVB% (which also requires the use of a Model 5.0 UVA/UVB meter).

I recommend the use of the Model 7.0 MED/hour meter. The reading can be "adusted" to reflect the FDA/CDRH "calculation denominator" of 156 J/m2 and then divided by 60 to get MED/minute. MED/minute is a very valuable "tool" for evaluating our sunbeds.

Don

roger

Don

Which UV meter do you think is the best for reading this bulbs in the booths?

Thankyou in advance.


ROGER>

Don Smith

Roger:

As mentioned above:

I recommend the use of the Model 7.0 MED/hour meter. The reading can be "adusted" to reflect the FDA/CDRH "calculation denominator" of 156 J/m2 and then divided by 60 to get MED/minute. MED/minute is a very valuable "tool" for evaluating our sunbeds.

If you are only going to buy one meter, this is the one to get. The price is approximately $190.00.

Don

BronzeBabe

Hey Don
Where do I get this model at?
Any suggestions would be appreciated.

Steve (Forever Bronze)