THE LABORATORY TESTING OF DISINFECTANTS

Testing disinfectants for efficacy.

Testing under laboratory conditions is undoubtedly useful in assessing the activity of disinfectants. However, such testing must be regarded as no more than a preliminary to field trials. This not only indicates the unreliability of laboratory tests, but also poses the wider problem of how any laboratory evaluation can be correlated with the field requirements. Many attempts have therefore been...

In-use testing of disinfectants in hospitals.

One hundred and five samples of clear, soluble phenolic disinfectants were obtained from varying sites in the wards of six hospitals. The concentration of disinfectant in each sample was measured by a colorimetric method and bacterial contamination was measured by an ;in-use' test and a membrane filter technique. The concentrations of disinfectant in 24/105 (23%) samples were at the recommended...

Laboratory testing the Anaconda.

Laboratory measurements of the performance of the Anaconda are presented, a wave energy converter comprising a submerged water-filled distensible tube aligned with the incident waves. Experiments were carried out at a scale of around 1:25 with a 250 mm diameter and 7 m long tube, constructed of rubber and fabric, terminating in a linear power take-off of adjustable impedance. The paper presents...

Testing and listing disinfectants – instrument and product of quality assurance

In Germany, the Disinfectants Commission of the Association for Applied Hygiene (VAH) ensures that the user can avail of procedures that meet the stipulated quality requirements. These requirements are based on the tried and tested standard methods of the German Society of Hygiene and Microbiology (DGHM) as well as on European standards. They take account of the different requirements dictated ...

The Value of Disinfectants