blue color 1.2cm width 10cm length 0.05cm thickness Surgical x ray strips Specification Certificate Application x-ray detectable slice(radio opac x ray detectable slice) for medical abdominal pads,laparotomy sponge,surgical towels that required to have the x ray detectable elements inside for after-operational safety examination.barium sulphate content of 62% or higher that make them visiable under medical x-ray machines .