Well that’s very good question. We sell some sodium nitrite corrosion inhibitors and where the customers choose to use them; they’re good corrosion inhibitors. They’re not accepted in many areas, mostly not in Europe, many companies who have EH&S issues with the nitrite, we do provide a titration that’s specific to sodium nitrite. So, what you just said is exactly right, you can carry in even an acid product into those baths and measure the concentration with the sodium nitrite titration. One of the problems is you can’t automate that process as a titration. You can’t do with it what you can do with conductivity in particular with the combination products that I’ve been referring to today.