Fit Testing Kit Contains. 1 x Hood. 6 x 2.5ml Bitrex Sensitivity Solution. 6 x 2.5ml Bitrex Test Solution. 2 x Nebulisers. 1 x Fit test instruction CD. Each kit is suitable for carrying out multiple tests and come packaged in their own sturdy case, all kits come with a FREE Fit Test CD, to help employers understand more about Fit Testing, the requirements and how to carry out tests. Make sure that the respirator itself is suited for the wearers particular face shape. Make sure that the respirator is fitted correctly to get a tight seal and ensure safety against hazards in the workplace. Important to remember it is the suitability of the respirator that is being tested. Respirators sold separately.