Karatmeter SL is a fast, precise & non-destructive tool for accurate analysis of bulk material & layer thickness. The unit precisely & swiftly determines the percentage by weight (or karat), in a solid piece of jewellery, precious coins or a by other piece of noble metal making use of the X-ray assay technique. It successfully determines the elemental composition of all gold alloys, platinum group metals & silver alloys. The analysis of bulk materials & layers is non-contact non-destructive without any requirement for sample preparations.