Linen Life and Ozone: What the South African Market Needs to Know
The impact of ozone laundry systems on linen durability has long been debated. Supporters often claim ozone extends linen life by up to 20%, while critics argue the opposite. With such conflicting views, the South African market has lacked clear, evidence‑based answers.
To settle the question, Otek Sustainable Laundry Solutions undertook a controlled, scientific comparison between ozone washing and traditional hot‑water washing. Specially prepared linen swatches were processed and tested using internationally recognised linen‑strength assessment methods at an accredited laboratory.
The findings were remarkable.
How OTEK’s Ozone System Was Tested
It is important to understand that the OTEK ozone laundry system operates differently from many other ozone technologies. OTEK introduces a low, consistent flow of ozone throughout the wash cycle, rather than injecting high concentrations at the start of each phase. This gentler, controlled approach is designed to protect fabrics while still delivering powerful disinfection.
Because of this, the results below apply specifically to the OTEK system and should not be used to generalise about all ozone laundry technologies.
What the Laboratory Results Revealed
Testing conducted by a NATA‑accredited laboratory showed that washing with OTEK ozone and the correct chemistry in cold water causes less than one‑third of the fabric damage associated with traditional hot‑water washing.
Even more striking, in this study the hot‑water wash failed to meet AS4146‑2000 standards, while the ozone‑based wash comfortably met the required performance levels.
These results confirm that OTEK’s cold‑water ozone process is not only highly effective for hygiene it is significantly gentler on linen.
Real‑World Impact for South African Facilities
For a 100‑bed care facility in South Africa, the implications are substantial. A typical site spending around R0.30 per bed per day on linen replacement (approximately R10,950 per year) could reduce that cost to roughly R0.10 per bed per day around R3,650 per year.
That represents an annual saving of R7,300, simply by switching to a more sustainable, fabric‑friendly wash process.
