Gilian 800i/5000/10i/12 Replacement filter, pkg 10 Back Catalog number: 811-0012-01 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 783-0007-01 Battery Pack, Replacement for Gilian 5000, 800i & Price on request 910-1601-NO Gilian 12 Starter Kit, No Cord Price on request 375-0008-01 Protective Rubber Boot for Nephelometer Price on request