1. Fruit and vegetable juices. Estimation of soluble solids content. Refractometric method. (15th May 1997) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Optics and optical instruments. Contact lenses. Determination of refractive index of contact lens materials. (15th March 1997) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗