Hello Andy,
We received 5 emails from you on Monday. I had hopped my reply also on moday had caught most of the issues you reported and as I mentioned we would be sending some tablets to you (FOC).
Due to a number of people in the company taking holidays over these weeks we are a little short of staff but normal service (from Vince) should be resumed next week.
Taking the chance here to cover the points I missed. Drying the desiccant yourself in an oven will give greater absorption capacity than using the foil packed ones we send out. You asked about buying desiccant yourself in the US. In our experience companies selling this kind of material have minimum orders of tens of thousands.
Best
Steve