X-rays are a type of radiation called electromagnetic waves. X-ray imaging creates pictures of the inside of your body. The images show the parts of your body in different shades of black and white. This is because different tissues absorb different amounts of radiation. Calcium in bones absorbs x-rays the most, so bones look white. Fat and other soft tissues absorb less and look gray. Air absorbs the least, so lungs look black.

An electrocardiogram (ECG) is a simple test that can be used to check your heart's rhythm and electrical activity. Sensors attached to the skin are used to detect the electrical signals produced by your heart each time it beats. These signals are recorded by a machine and are looked at by a doctor to see if they're unusual. An ECG may be requested by a heart specialist (cardiologist) or any doctor who thinks you might have a problem with your heart, including your GP.

HumaLyzer 4000 is the only photometer for routine applications that offers reference channel optics and allows remote-access for service. Together with many other new features, the HumaLyzer 4000 is a pioneer in the field of clinical chemistry photometers.

• Improved precision and drift of results with reference detector technology

• Easy to use and powerful

• Designed for tough conditions and use in remote areas

• Remote support and simple maintenance