pool and spa news did a test comparison of some test kits. heres the article http://poolspanews.com/2008/092/092n_testkits.html after you reasd the article on the right you can access the actual results. I was having trouble interpereting them to see what is the best test. It seems as if the palintest is a more accurate test than lammotte. If this is the most accurate, what is the cost difference between palin and lammotte for a company, does anyone in the industry know this? give your thoughts on this article