Generators have increased costs when run at higher purity and pressure.

Some shops the N2 is a higher pressure other lower than the compressed air.
Some of the selective solder machines use N2 to run the pneumatic functions.
If the pressure is low there re a lot of low pressure calls.

Turning off the generator over the weekend can result in long start up
times waiting for  the purity meets spec.

Generator ran 3 waves, 5 reflows and 4 selective solders.

Min. Purity level depends on what you are soldering and solder used and the
ability of the machine to maintain a localized inert atmosphere.
I found Immersion Sn the toughest to solder on selective when I used SAC305.

The generator is very cost effective if there is no bulk LN2 on site.

On Wed, Jan 10, 2018 at 6:36 PM, rkondner <[log in to unmask]> wrote:

> Hi,
>
> When we setup 2 selective Soldering machines the vendor strongly
> recommended higher purity, 99.99 or better.
>
> Does anyone have experience with what level of purity is "Really"
> required? What does a user see as the purity drops?
>
> Thanks,
> Bob K.
>
>
> On 1/10/2018 5:44 PM, Roger Mack wrote:
>
>> OnSite Gas Nitrogen generator
>>
>