Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-225643 — ochratoxin A: 4 µg/kg

— ochratoxin A: 4 µg/kg to 9 µg/kg

Sampling of blowing agents is useful for determining the chemical composition

whether fixed or portable

BS EN 16962 provides you guidance on principle

Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-225643 — ochratoxin A: 4 µg/kg1 Scope This International Standard applies to optical devices specified by the manufacturer for use by visually impaired persons as optical low vision aids. It specifies the optical and mechanical requirements and test methods for such devices, including optical devices with electrical components such as illuminators. It does not apply to electro optical devices for enhancing low vision. NOTE Requirements and test methods for electro optical devices