I've talked to you via e-mail ..... I needed to use the meter off destinations identified by the 20PPM / 1,000,000. But since you have to do that ..... Tested Desktop unit and the additional cost is quite high. So to speed up data transmission back to my clients. I ask you to please bid on these operations. Information on the availability of their operations. I want to use the product for at least 10-20 machine.