Meridian Form New Zealand: School and University Sports Programme Wash Durability Evaluation
Meridian Form is a New Zealand-based brand whose school and university sports programme is one of its most demanding programmes. Durability is where most functional claims fail. We washed the silver ion antibacterial knit fifty times under domestic conditions and re-measured after every ten cycles for Meridian Form.
Meridian Form: Silver Ion Antibacterial Knit in use during daily physical education and team fixtures
Evaluation background
The programme covers pe shirts, shorts and tracksuits, used for daily physical education and team fixtures. The environment is heavy use by growing athletes with shared laundry and the requirement written into the brief was value durability with easy name-tagging and care. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Silver Ion Antibacterial Knit |
| Composition | nylon spandex with silver ion filament |
| Weight | 230 GSM |
| Width | 160 cm |
| Primary function | stops the bacteria that turn sweat into odour |
| Target | bacterial reduction above 99% |
| Test method | ISO 20743 |
| Additional note | performance retained after 30 home washes |
| Certification | OEKO-TEX Standard 100 |
Silver Ion Antibacterial Knit close-up showing the fabric surface
Method
Washing ran at 30 degrees with a standard reference detergent and no softener, then tumble dried on low. This mirrors what customers actually do rather than what a care label optimistically suggests.
Performance by cycle
The fabric started at bacterial reduction above 99% and held above 90% of that value through 30 cycles. The decline after cycle 40 was gradual, which is the behaviour we want: a slow change, not a sudden failure.
Evaluation session with the Meridian Form team
Appearance
Pilling stayed at grade 4 or above and there was no visible shade shift against the retained reference. Surface comfort after washing mattered most to Meridian Form, so hand was scored by a panel at every interval.
Conclusion on service life
On this evidence the garment keeps its function for a full retail season of weekly washing, and ISO 20743 remains a valid claim for that period.
Test records and inspection notes for the School and University Sports Programme
Scorecard
| Criterion | Result |
|---|---|
| Function after 30 washes | 4.9 / 5 |
| Appearance retention | 4.5 / 5 |
| Pilling grade | 4.6 / 5 |
| Hand retention | 4.3 / 5 |
| Shade | 4.7 / 5 |
“The report gave us numbers we could put in front of our retail partners without any argument.” — Meridian Form Technical Team
Packed bulk rolls before shipment to New Zealand
Verdict and recommendation
Fifty cycles is a reasonable service life for this product class, and the silver ion antibacterial knit stayed inside tolerance throughout. Care wording should be printed exactly as tested. For Meridian Form the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue ISO 20743 results with every lot so any claim can be supported with data.
