Laboratory study of the effectiveness of tea tree oil gel against bacteria and fungi both in the air and on hard surfaces – July 2015
Description – The tests in this study were conducted under near real world conditions. Tests were done in a normally open room with a common split system air conditioning unit as the main air circulation source. Standard GermXit® brand gel containing tea tree oil was placed near the air conditioning unit and allowed to evaporate as it would in normal use.
Test procedure – Bio cultures were taken at various locations around the room – on a table, on the floor, high and low. Samples of air in the room were also taken at the same times and cultures done of the sample air. Time intervals between sampling were at time 0h, 6h, 24h, 48h and again at 15 days.
Final results – The results are most impressive – between 89% and 95% reduction in bacteria on surfaces and between 81% and 90% reduction in the air only 24 hours after GermXit® Gel was introduced into the system. Effectiveness improved over time.
“The test demonstrates killing efficacy in the air and on surface[s]. The efficacy shows no significant difference in the – sampling location/culture plate placement location [within the room].” – Mahidol University Final Report
Cultures of various fungi were also sampled at the same time intervals and results were equally impressive. Reductions in fungi were seen of more than 46% at 24 hours and increased to over 74% reductions at 15 days.
“Overall, using the volatile gel GermXit® does add value to maintain cleanliness and healthiness of the environment as proposed by the company.” – Mahidol University Final Report
The report concluded that used as a passive indoor air quality treatment treatment, tea tree oil dispersed via evaporation of a volatile gel such as GermXit can be effective to significantly reduce bacteria and fungi both on surfaces and in the air of the treated areas. Further this effect and it penetration into the area increases over time.
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