Like any other commercial enterprise, calibration laboratories cannot be all things to all people. Yes, it’s true that some think they can, but they eventually come unstuck when users of their data get into disputes and the opposing party had calibration from someone that knew what they were doing.
Most labs have capabilities to suit the range of work they are likely to encounter but every now and then they have to say ‘no’ to a request. Too often, the customer thinks they are making a big deal out of nothing because they don’t understand the implications implied by their request. The following notes may explain why you a get a ‘no’ from your calibration source—and what you can do about it as well.