The green, orange and red colour corners you see on the product images indicate risk.
Green Classification - these items are common items that are used in general practice. They are non invasive, generally non-sterile and interchangable.
Orange Classification - these items are common items that may be used in teritiary care. They are generally sterile, invasive but not implantable.
Red Classification - these items are specialised items that maybe used in radiology, endoscopy and surgery. They are sterile, invasivem implantable and are device specific (ei not interchangable). They generally require re-processing to be used again. They are often perfect for educational or demonstration purposes.